This is an appeal from the judgment of sentence entered following appellant’s convictions for possession of cocaine, a schedule II controlled substance, 1 and possession of this drug with the intent to deliver. 2
Appellant presents the following issues for our review: (1) whether the suppression court erred in refusing to suppress the evidence; (2) whether the trial judge erred by questioning a surrebuttal witness; (3) whether the trial judge erred in limiting defense counsel’s closing argument to a period of twenty minutes; (4) whether the prosecutor’s references to appellant’s need for an interpreter constituted misconduct which necessitates the grant of a new trial; (5) whether the trial judge’s actions relating to trial counsel’s contumacious behavior deprived appellant of his right to a fair trial; and (6) whether trial counsel’s contemptuous conduct constituted ineffective assistance of counsel. For the reasons set forth below, we affirm.
Before addressing appellant’s claims, it is necessary to recount the pertinent facts giving rise to this appeal. During the early morning hours of November 10, 1992, Detective Steven Goodzich of the Erie Police Department received information from two confidential informants that appellant, Ruben Garcia, had cocaine in his car and on his person. 3 Detective Goodzich further learned that appellant was accompanied by *419 Carrie Ferraro, and that they were in a bar/restaurant known as Luigi’s Tavern. Detective Goodzich was also informed that appellant’s white Cadillac, in which the cocaine was stored, was parked nearby. Detective Goodzich relayed this information to Officer Terry Dawley who was on duty with his canine partner, Cujo, at the time.
Officer Dawley, who was previously acquainted with both appellant and Ms. Ferraro, proceeded to Luigi’s Tavern where he observed appellant’s car parked across from the bar. Shortly thereafter, he saw the pair exit the tavern and enter appellant’s vehicle. Appellant left the area and drove eastward; Officer Dawley followed. While driving, the officer observed appellant repeatedly looking in his rearview mirror and leaning over towards the passenger side of the car. As a result of this suspicious conduct, Officer Dawley signaled to appellant to pull his vehicle over.
Appellant complied and in response to Officer Dawley’s instructions, exited the car and stood by the trunk. Officer Dawley told appellant that he was suspected to be in possession of drugs; the officer then asked appellant if he would permit the car to be searched. Appellant consented and told the officer to “go ahead.” Before Officer Dawley could perform the search, however, he noticed that appellant had his hands in his pockets. Concerned for his own safety, the officer thrice asked appellant to remove his hands. Appellant simply looked at the officer, said nothing and steadfastly refused to remove his hands so that they were visible. In view of appellant’s behavior, the officer believed that appellant was in possession of a weapon and removed appellant’s hands from his pockets. The officer then reached into appellant’s pocket and removed its contents. Although no weapons were discovered, Officer Dawley found a plastic bag containing eleven smaller plastic packets which were later confirmed to contain cocaine. Appellant was then placed under arrest.
While Officer Dawley was talking with appellant, two other Erie Police officers arrived to assist. They parked nearby and *420 noticed Ms. Ferraro moving nervously in the front seat of appellant’s car. The officers, again acting out of concern for their own safety, asked Ms. Ferraro to exit the vehicle. Ms. Ferraro complied. After a pat-down frisk disclosed that Ms. Ferraro had no weapons, the officers looked inside the car and noticed a clear plastic baggie containing a white substance, which was later determined to be cocaine, lying on the floor near the passenger seat. The officers then apprised Officer Dawley of their discovery.
At this point, Officer Dawley decided to conduct a sniff-search of the vehicle to determine whether any additional quantities of cocaine was present. Accordingly, Rudy, a trained drug-dog, was brought to the scene and exposed to the vehicle. Rudy exhibited a positive response in the hood area of the car, thus signifying that drugs were located therein. Consequently, the vehicle was impounded and towed to police headquarters. Based on the above information, Officer Dawley obtained a warrant to. search the car. The search yielded an additional packet of cocaine which had been secreted in the engine compartment near the battery. 4 As a result, appellant was charged with various offenses arising out of this incident.
Appellant filed a motion to suppress the physical evidence seized from his person and vehicle. 5 The motion was denied and appellant was convicted of the above crimes following a jury trial held in June of 1993. 6 Appellant timely filed post-trial motions which were denied. On July 19, 1993, appellant was sentenced to a term of five (5) to ten (10) years imprison *421 ment. 7 Appellant then timely appealed therefrom. 8
Appellant initially challenges the lower court’s refusal to suppress the physical evidence. Before we can address this issue, we must first ascertain whether it has been sufficiently preserved for review.
9
“It is well-established that issues not raised in post-trial motions are not preserved for appellate review. This rule applies even where the issue was properly presented in a pre-trial motion.”
Commonwealth v. Metz,
*422 Appellant did not contend that the lower court had erred in denying his suppression motion in his timely filed post-trial motions. Nor did appellant attempt to raise the issue in supplemental post-trial motions. Rather, this issue was not expressly presented to the trial court until it was raised in appellant’s statement of matters complained of on appeal. Judge Bozza did not discuss appellant’s procedurally defective method of presenting this issue. Opinion of Judge Bozza, filed 8/24/94, at 1-2. Nor did the trial judge appear to have directly considered its merits. He instead noted that the suppression motion had been heard and decided by Judge Connelly, and that Judge Connelly’s opinion and order were attached to Judge Bozza’s discussion and made a part thereof. 10 Id.
The above review demonstrates that appellant did not raise the suppression issue at any time during the post-trial motion stage of the proceedings. Nor did appellant file or request permission to file supplemental post-trial motions for the purpose of raising this claim. Although appellant included this issue in his Rule 1925(b) statement, the trial court neither addressed this procedural defect nor expressly discussed the merits of the issue. Under these circumstances, appellant’s challenge to the suppression ruling must be deemed waived.
11
Commonwealth v. Metz,
In his second allegation of error, appellant argues that the trial judge erred by questioning a surrebuttal witness regarding a possible violation of the trial court’s previous “gag-order” which precluded the disclosure of any information pertaining to the confidential informants’ identities and testimony. With regard to this issue, this court has observed:
A new trial is required only when the trial court’s questioning is prejudicial, that is when it is of such a nature or substance or delivered in such a manner that it may reasonably be said to have deprived the defendant of a fair and impartial trial. It is always the right and sometimes the duty of the trial judge to interrogate witnesses. However, questioning from the bench should not show bias or feeling or be unduly protracted.
Commonwealth v. Ables,
The trial transcript revealed that Detective Goodzich and Ms. Ferraro were called as rebuttal witnesses. Prior to Detective Goodzich testifying, however, the trial court closed the courtroom to the public. Ñ.T., 6/16/93, at 160-161. The trial judge further admonished the jury, counsel, appellant and everyone else in the courtroom that the names of the informants, their testimony and their role in this case was not to be divulged. Id. at 156-157 and 189-190. To rebut the testimony proffered by Detective Goodzich and Ms. Ferraro, appellant presented the testimony of Mary McNaughton and other witnesses. During her cross-examination by the prosecution, Ms. McNaughton was asked whether she knew why she was re-called to testify and whether she was informed that Ms. Ferraro had testified. 12 N.T. 6/17/93 at 31. Ms. McNaughton *425 responded that she knew that Ms. Ferraro had testified because she had been present in court, albeit outside of the courtroom. Id. Ms. McNaughton was also asked whether she had learned from any source exactly what Ms. Ferraro had said. Id. at 31. Ms. McNaughton’s answer was somewhat ambiguous in that she stated “not really” and only further denied knowing the substance of Ms. Ferraro’s testimony after additional questioning. Id. at 31-32. Upon the completion of Ms. McNaughton’s examination by both counsel, the following exchange occurred:
THE COURT: Hold on just a minute, ma’am. Did you say you were outside the courtroom yesterday?
THE WITNESS: Yes, I was.
THE COURT: During the time that Carrie Ferraro was testifying?
THE WITNESS: Yes, I was.
THE COURT: Did you hear her testimony when you were sitting outside?
THE WITNESS: No.
THE COURT: Thank you. You may step down.
Id. at 33-34.
The trial judge’s interrogation discloses that he merely attempted to clarify whether Ms. McNaughton had learned of the substance of Ms. Ferraro’s testimony in violation of his prior ruling. The examination was not protracted and was conducted in an unbiased and non-prejudicial manner. Moreover, the questioning redounded to appellant’s benefit by strengthening the witness’ credibility. The prosecutor’s cross-examination attempted to elicit an admission from Ms. McNaughton that she had learned of the substance of Ms. Ferraro’s testimony and had tailored her own testimony accordingly. However, the trial court’s examination made it clear that Ms. McNaughton had not heard Ms. Ferraro’s testimony and thus dispelled any negative inferences sought to be raised by the prosecutor. When viewed in this context, we do not believe that the trial judge’s concise questioning was so prejudicial as to mandate the award of a new trial.
See
*426
Commonwealth v. Roldan,
Appellant next asserts that the trial judge erred by imposing a twenty minute time limit on defense counsel’s closing arguments. The length of closing argument is a matter which is entirely within the discretion of the trial judge.
Commonwealth v. Buccieri,
Where the discretion exercised by the trial court is challenged on appeal, the party bringing the challenge bears a heavy burden____ [I]t is not sufficient to persuade the appellate court that it might have reached a different conclusion if, in the first place, charged with the duty imposed on the court below; it is necessary to go further and show an abuse of the discretionary power. An abuse of discretion is not merely an error of judgment, but if in reaching a conclusion the law is overridden or misapplied, or the judgment exercised is manifestly unreasonable, or [the judgment is] the result of partiality, prejudice, bias or ill-will, as shown by the evidence of record, discretion is abused. We emphasize that an abuse of discretion may not be found merely because the appellate court might have reached a different conclusion, but requires a showing of manifest unreasonableness, or partiality, prejudice, bias, or ill-will, or such lack of support as to be clearly erroneous.
Paden v. Baker Concrete Construction, Inc.,
The facts of this case were not unduly complicated. There was no dispute that the cocaine was found on appellant’s person and in his car. Thus, the only question to be resolved by the jury was whether appellant possessed the cocaine knowingly/intentionally or whether the drugs were planted by Ms. Ferraro and/or Mr. Voorhis for the purpose of furthering his cooperation with the police in exchange for the dismissal of the charges pending against Mr. Voorhis. Moreover, the trial judge imposed the same time limitation on the Commonwealth. We further observe that defense counsel was an experienced trial attorney who was able to fully, adequately and cogently summarize his position and the pertinent evidence within the allotted time period. See N.T. 6/17/93 at 46-66. In fact, the trial court permitted defense counsel to speak well in excess of the time limits. See Opinion of Judge Bozza, filed 8/24/94, at 4 (indicating that counsel spoke for an additional ten minutes). Under these circumstances, the trial judge’s decision to limit the length of closing argument did not constitute an abuse of discretion as defined in Poden.
Appellant claims in his fourth issue that the prosecutor’s repeated references to appellant’s need for an interpreter constituted misconduct which requires the grant of a new trial. Appellant has not appropriately developed this claim in the argument portion of his brief, as the rationale supplied to this court consists solely of a single conclusory sentence. However, appellant has failed to explain the manner in which the prosecutor’s actions were improper and why the award of a new trial is the appropriate remedy for the alleged misconduct. Appellant also has neither referred us to any relevant authority in support of his position nor indicated the places in the record where the challenged remarks can be found, in contravention of Pa.R.A.P., Rule 2119(b), (c) and (d), 42 Pa.C.S.A. Because appellant has failed to support this
*428
claim with proper argument, we deem it to be waived.
13
Commonwealth v. Gooding,
*429 In his penultimate allegation of error, appellant contends that the trial court erred by limiting trial counsel’s style and by reprimanding counsel for his contemptuous behavior in front of the jury. Appellant has again failed to properly support this argument with citations to pertinent authority and specific references to the record. Moreover, appellant’s reasoning is deficient in that it consists of nothing more than self-serving and conclusory assertions regarding the purported hostility between the trial judge and defense counsel and its allegedly prejudicial effect on the jury. We accordingly find this issue to be waived. 14 Commonwealth v. Gooding and Commonwealth v. Rodgers, supra.
*430 Appellant’s final challenge pertains to the alleged ineffectiveness of trial counsel based on his contemptuous conduct. To be eligible for relief, appellant must demonstrate that:
(1) the underlying claim is of arguable merit; (2) the particular course chosen by counsel did not have some reasonable basis designed to effectuate his [client’s] interests; and (3) counsel’s ineffectiveness prejudiced him. Counsel is presumed to have acted in his client[’s] best interest; thus, it is appellant’s burden to prove otherwise.
Commonwealth v. Walker,
Trial counsel is expected to vigorously defend his/her client’s interests. Nevertheless, zealous advocacy has its limits, as lawyers are required to act in a respectful, professional and courteous manner towards the court, opposing counsel and the witnesses. There is no question that defense counsel’s conduct transgressed the bounds of propriety here. Appellant’s underlying claim therefore has arguable merit. However, appellant is not entitled to any relief unless he can show that trial counsel’s conduct was unreasonable and that he was prejudiced,
ie.,
that the result in this case would have been different absent such conduct.
Commonwealth v. Walker, supra; Commonwealth v. Edmiston,
The record reflects that the behavior for which trial counsel was ultimately sanctioned was intentionally employed as a strategy for advancing appellant’s best interests by providing the jury with a favorable opinion of appellant and a negative view of the police informants. Opinion of Judge Bozza, filed *431 8/24/94, at 6. We also observe that the jury was unaware of the fact that trial counsel had engaged in contumacious behavior because the discussions concerning his conduct and the contempt proceedings all occurred outside the presence of the jury. In addition, the evidence of appellant’s guilt was overwhelming as there is no question that the drugs were found on his person and in his car, and his defense to the charges was highly incredible when considered in light of the other evidence. When viewed in this manner, it is evident that the conduct complained of inured to appellant’s benefit rather than his detriment. Accordingly, we are not persuaded that relief should be granted in this instance. 15
Judgment affirmed.
Notes
. 35 P.S. § 780-113(a)(16) (defining the crime of possession); 35 P.S. § 780-104(2)(i)4 (classifying cocaine as a Schedule II controlled substance).
. 35 P.S. § 780-113(a)(30).
. The confidential informants were later identified as Carrie Ferraro and her boyfriend, Pat Voorhis. Although both informants contacted Detective Goodzich, Mr. Voorhis’ information came from Ms. Ferraro, who had actually observed appellant in possession of the drugs. Detective Goodzich initially became acquainted with Mr. Voorhis when he was arrested on a drug-related interdiction. In exchange for Mr. Voorhis’ cooperation, Detective Goodzich ultimately withdrew the various charges against Mr. Voorhis. Detective Goodzich later met/spoke with Ms. Ferraro during his dealings with Mr. Voorhis.
. A total amount of 10.22 grams of cocaine was seized from the car and appellant’s person.
. This motion was heard and decided by Judge Connelly.
. Judge Bozza presided over the trial, post-trial and sentencing proceedings.
. Appellant was represented during the pretrial and suppression proceedings by Dennis Williams, Esq. Appellant was represented at trial, post-trial and the sentencing by AJ. Adams, Esq., a public defender. For clarity and ease of discussion, we will refer to Mr. Adams as trial counsel. Due to his behavior at the trial, Attorney Adams was convicted of criminal contempt. This court affirmed Mr. Adams’ conviction; further review was denied.
In re: A.J. Adams,
. Appellant is represented on appeal by Joseph Burt, Esq., another member of the public defender’s office. Attorney Burt filed a motion to withdraw due to the relationship between counsel and the challenges to prior counsel's representation. This court denied the motion.
. Post-sentencing motions are now optional under the amended Rules of Criminal Procedure; issues are therefore preserved for appeal regardless of whether they are included in the post-sentencing motion. Pa.R.Crim., Rule 1410.B, 42 Pa.C.S.A. and Comment thereto (present rule). However, the amendments only apply to those cases in which the determination of guilt occurs on or after January 1, 1994. Id., Note (present rule). Because appellant was convicted prior to this date, the amended rule is inapplicable. We must accordingly determine whether appellant’s claims have been preserved pursuant to the prior pertinent caselaw and rules. Consideration thereof discloses that except for his first allegation of error, which is more fully discussed infra, appellant’s other claims were raised in his post-trial motions.
. The judge’s comments suggest that he did not address the merits of the issue but merely referenced Judge Connelly’s disposition for the purpose of satisfying Pa.R.A.P., Rule 1925(a), 42 Pa.C.S.A., which requires that the judge who entered the order appealed from must file at least a brief statement of the reasons for the order, or for the rulings or other matters complained of, or shall specify in writing the place in the record where such reasons may be found.
. Even if we were to consider this issue, appellant would not be entitled to any relief. The police had a reasonable suspicion that appellant was engaged in criminal activity based on their existing knowledge of appellant’s drug trafficking, the information supplied by the confidential informants, as well as appellant’s behavior in furtively looking into his rearview mirror, leaning toward the passenger side of the car and refusing to remove his hands from his pockets despite being thrice requested to do so by the officer. Based on this information, the police were certainly justified in stopping appellant for investigative purposes.
In the Interest of S.J.,
. Ms. McNaughton was previously called to testify during the presentation of appellant’s defense.
. Even were we to address this issue, it is plain that no relief would be due. The record contains three instances in which the prosecutor briefly questioned appellant and two other witnesses regarding appellant’s ability to converse in and comprehend English. N.T., 6/16/93 at 100; N.T. 6/17/93 at 6 and 37. The prosecutor’s examination does not suggest an attempt to ridicule appellant merely because he used an interpreter. Instead, the questions sought to attack appellant’s credibility by implying that appellant did not need an interpreter since he was able to adequately communicate with the police and others on prior occasions. Appellee’s Brief at 14. Matters pertaining to credibility are certainly appropriate subjects for cross-examination. Assuming,
arguendo,
that the prosecutor's examination on this subject was inappropriate, a new trial is not required. A prosecutor’s improper examination or comments require reversal only when they create a fixed bias or hostility toward the defendant such that the jury could not objectively weigh the evidence and render a true verdict.
Commonwealth v. Ford,
However, an attack on a defendant’s credibility based on his/her desire to testify through an interpreter should not be the preferred mode of impeachment, as it comes perilously close to impinging upon the defendant’s exercise of his/her fundamental constitutional rights.
See Commonwealth v. Pana,
. In any event, a new trial would not be warranted on this ground. As conceded by appellant, the record reflects that the trial court’s discussions with counsel primarily occurred outside of the presence of the jury. N.T. 6/15/93 at 127-129; N.T. 6/16/93 at 21, 152 and 179-181; N.T. 6/17/93 at 39-41 and 107-108. The jury was informed that objections and evidentiary matters would be heard at sidebar outside of their hearing. N.T. 6/15/93 at 5-6. Thus, the mere fact that sidebar discussions occurred could not have led the jury to believe that some egregious impropriety had been committed by trial counsel. Of the few incidents which did take place before the jury, there is nothing in the record which even remotely suggests that the trial judge did or said anything to impugn trial counsel or appellant. N.T. 6/16/93 at 185— 187; N.T. 6/17/93 at 54, 56, 59-60 and 63-64.
See also In re: A.J. Adams,
. Our decision should not be construed as a condonation of the tactics employed by trial counsel in this case.