Vincent Pacelli, Jr., was convicted on January 31, 1975 after a two-week jury trial before Hon. Charles E. Stewart, United States District Judge for the Southern District of New York, on both counts of a two-count indictment. Pa-celli was charged in Count One with a conspiracy with Barry Lipsky to violate the civil rights of a Government witness, Patsy Parks, by causing her death before she could exercise her right to testify, in violation of 18 U.S.C. § 241. Count Two charged the use of force to impede her testimony, in violation of 18 U.S.C. § 1503. On February 28, 1975, Judge Stewart sentenced Pacelli to a term of life imprisonment on Count One and to five years imprisonment on Count Two, to be served concurrently with each other but consecutively to a twenty-year term and a fifteen-year term of imprisonment on two prior narcotics convictions. Pacelli now appeals from the judgment of conviction.
I. THE FACTS
The appellant here had previously been convicted of the same crimes involving the murder of Patsy Parks but that conviction was reversed by this court,
United States v. Pacelli,
Patsy Parks, under subpoena, testified before a grand jury in the Southern District of New York on May 27, 1971 about a box, apparently containing money, which she had kept for Pacelli in her apartment. An indictment charging Pa-celli, his wife and two others with narcotic violations was returned by the grand jury. The case was set for trial on February 8, 1972. On February 3, 1972, Government agents sought unsuccessfully to serve Parks with a subpoena for her appearance at the Pacelli trial. Lipsky, who was advised by Parks of the attempted service and her desire to contact Pacelli, testified that he drove to *137 Pacelli’s apartment in New Rochelle in the early morning of February 4, 1972. Upon being advised of the Parks subpoena, Pacelli stated: “It’s that box. It’s that God-damned box. She has been to the grand jury and she ratted me out. I know what I have to do.” The two men then drove in a rented car to New York, stopping to purchase four gallon cans of gasoline, and then proceeded to the “Hippopotamus,” a New York discotheque where Parks was drinking with friends while waiting to be contacted by Pacelli. Lipsky told Parks where Pacelli was parked and the three then proceeded to a remote area of Massapequa, New York. Enroute, Pacelli discussed the narcotics case with Parks and offered her money to leave town, which she declined. Finally, Pacelli stabbed Parks in the throat and several times in the chest with a knife until she was dead. Her body was then doused by Pacelli with the gasoline purchased earlier and set on fire, with Lipsky lighting the match. The men then returned to Pacelli’s apartment in New Rochelle, disposing of Parks’s effects, the empty gasoline cans and the knife and cleaning the car to eliminate bloodstains. Parks’s body was found on the morning of February 4th and was identified a week later by footprints and dental charts.
Although the Government’s case was dependent upon Lipsky’s detailed testimony, it was corroborated in some respects by other witnesses. Parks was placed by witnesses in the Hippopotamus on the night and at the time testified to by Lipsky; the night attendant at the gasoline station identified Lipsky as the purchaser of four gallon cans of gasoline at about 2:30 a. m. one morning; a knife was found in the mud of a bay area two blocks from Pacelli’s residence where Lipsky stated they had disposed of the murder weapon. There was also evidence that the same rented car in which the murder was committed was again rented by Pacelli’s drug partner, A1 Bracer, on February 16, 1972 and was found engulfed in flames two days later in Fairfield, New Jersey, at a time when Lipsky was hiding in Florida. Chemical inspection disclosed that there was gasoline throughout the interior of the car and indicated, although not conclusively, that traces of blood were present on the floor carpet.
II. LIMITATIONS ON CROSS-EXAMINATION
Appellant argues that the trial court erred in precluding the defense from cross-examining Lipsky with respect to three matters of direct significance in assessing his credibility. It is well understood that the admission of evidence on cross-examination is a matter within the discretion of the trial judge.
United States v. Jenkins,
On direct examination, Lipsky related in detail the horrible execution of Patsy *138 Parks by Pacelli but also discussed his own participation which commenced with alerting the defendant to her appearance before the grand jury. He furthermore obviously knew of Pacelli’s intent to kill her; he purchased the gasoline, he took a book of matches from the Hippopotamus and he put the match to the gasoline which caused the conflagration aimed at destroying the corpse and making its identification impossible. Also on direct examination, he admitted to his alliance with Pacelli in the distribution of narcotics. On cross-examination, he admitted that he had taken illegal drugs and was presently using medicinal drugs; he also admitted that he had pleaded to a stock fraud charge in cooperation with the Government. He admitted lying to his lawyers, to juries and to a probation officer who he knew was preparing a pre-sentence report which was to be submitted to a sentencing judge. He admitted to selling stolen books in college and forging his mother’s checks. He admitted that his attorney had told him on April 11, 1972, before he went before the grand jury, that an agreement had been reached with the Government that he had complete transactional immunity and would not be prosecuted for anything he told the Government, not for “any damn thing.” He admitted that he lied in two previous federal trials in 1972 about his understanding as to whether or not he would be prosecuted. He further admitted that he thought that by testifying against Pacelli he would “get off relatively easy.”
In view of this elicitation of the litany of Lipsky’s licentious behavior, his corruption and his past perjury, the argument that cross-examination was erroneously restricted in the very areas in which his vulnerability had already been exposed becomes insubstantial and unconvincing.
Judge Stewart, it is urged, erroneously refused to permit cross-examination of Lipsky with respect to his testimony in a narcotics trial in June 1972, which, it is alleged, falsely implicated Pacelli. The testimony sought to be introduced was that of one Joseph Nunziata, a deceased New York City detective, who testified in a case involving another defendant, Valentine, which ended in a mistrial. Lipsky testified that he, Valentine and Pacelli had conducted a drug transaction in a New York cafe, “Yellowfingers.” Nunziata’s testimony, Pacelli contends, was that he had observed both Valentine and Lipsky at the scene, but did not observe Pacelli in the restaurant. On denying Pacelli’s post-trial motion for a new trial based on the exclusion of this evidence, Judge Stewart found that this testimony did not establish that “Pacelli was not in fact at the restaurant for at least some of the time in question.” A reading of the testimony reveals that Nunziata had a clear view of Lipsky and Valentine, but does not indicate that he could observe all of the persons in the Yellowfingers cafe at the time or that he would have recognized Pacelli had he been present. Nunziata’s death, of course, made further explication impossible. Aside from the failure of the Nunziata testimony to establish inconsistency or perjury on Lip-sky’s part, there was such a plenitude of evidence otherwise demonstrating Lip-sky’s villainy that we find no abuse of discretion in the action by the court in precluding the admission of the Nunziata testimony.
United States v. Blackwood,
*139
As we have already indicated, the jury was fully aware from Lipsky’s cross-examination that he had committed perjury in two prior criminal cases. His previous testimony in the June and December 1972 trials was read to the jury. Lipsky admitted that although he knew he had complete immunity, he lied in answering that he had no immunity. Counsel for Pacelli was, however, precluded below from attempting to establish that Lipsky’s perjury was suborned by an Assistant United States Attorney. It is urged that the alleged subornation would be material to establish that Lip-sky felt free to lie and invent false testimony because he knew that the Government was willing to condone his perjury. We note that in the prior
Pacelli
appeal the same argument was made and was rejected by this court.
United States v. Pacelli, supra,
Finally, it is urged that the trial court committed reversible error in refusing to permit defense counsel to ask Lipsky whether he had suggested to one Bruce Gordon in January 1972 that he “burn” two witnesses. The evidence, it is argued, not only would have established Lipsky’s tendency toward violence but also would have undermined his story *140 that his role in the Patsy Parks murder was passive and was motivated by his fear of Pacelli. The fact that Lipsky was a hardened criminal not adverse to violence was made evident to the jury throughout the trial. Lipsky admitted buying the gasoline and lighting the match which cremated the body. There is no question but that Lipsky was a principal in the murder. 3 There is nothing to justify the argument that Lipsky was in such fear of Pacelli that he participated unwillingly in this brutal killing. The question at issue was not Lip-sky’s guilt but Pacelli’s. We consider the refusal of the court to entertain the question to have been within its discretion, particularly in view of the far-ranging latitude permitted here in the cross-examination of Lipsky.
III. PSYCHIATRIC EVIDENCE
Pacelli further claims that the trial court committed reversible error in refusing to allow a psychiatrist, Dr. David Abrahamsen, to testify that Lip-sky was psychopathic and incapable of telling the truth. Whether or not psychiatric testimony is admissible to impeach the credibility of a witness is within the discretion of the trial judge, see
Hamling v. United States,
Pacelli’s other arguments on appeal are without merit. 6
Affirmed.
Notes
. Pacelli’s brief argues that this testimony was also essential in undermining Lipsky’s claim, which was “inextricably related to his testimony about the murder,” that he was associated with Pacelli in the narcotics business. Aside from the inconclusive nature of the testimony, the nexus between Lipsky’s testimony in the Valentine case and the murder of Parks immediately following her grand jury testimony and subpoena in the Pacelli narcotics trial is, at best, remote. In any case, the record establishes from the testimony of Susan Weyl that Lipsky and Pacelli used her apartment in November and December 1971 to cut and package heroin and cocaine.
The argument that the testimony was essential to establish the animus of Lipsky toward Pacelli is not persuasive. In
United States v.
*139
Pacelli, supra,
The appellant relies upon
United States v. Haggett,
. Appellant also claims that the evidence of the role of the Assistant United States Attorney in the extension of promises to Lipsky was essential to show that Lipsky perjured himself in the June and December 1972 trials when he testified that no promises had been made to him in return for his testimony. Lip-sky explained that his erroneous testimony in the two trials was the result of confusion as to what offenses the questions about promised immunity were concerned with. Pacelli argues that this explanation could have been decisively undermined by proof of the Assistant United States Attorney’s role since it was that very prosecutor who had asked him the crucial questions. However, the defense here had other evidence which it could have used to challenge Lipsky’s explanation. Lipsky had testified in
United States v. Sperling,
. Examples of Lipsky’s unusual behavior recited in Part III of this opinion also suggest a capacity for violence on his part.
. A pretrial motion for a psychiatric examination of the witness Lipsky was denied by Judge Stewart. This was properly within his discretion.
United States v. LaBarbera,
. Had Dr. Abrahamsen been permitted to testify before the jury the jury might.well have been confused by his testimony, as an examination thereof makes clear. Although a complete reading of the transcript establishes that Dr. Abrahamsen’s testimony was properly excluded, one example of the reasoning which prompted the decision of Judge Stewart is illuminating. In his testimony below Lipsky was asked: “What does [the oath] mean?” His answer was: “It means you sit here and swear to tell the truth, to the best of your ability and the best of your knowledge and the best of your memory.” Dr. Abrahamsen testified that this answer indicated to him that Lipsky “doesn’t understand really what it means to tell the truth.” The next several pages of the transcript illustrate the inability of the judge to understand the psychiatrist’s conclusion. That inability is shared here. How the doctor’s conclusion would have been of aid to the jury is far from clear.
. Appellant suggests, as he did on the prior appeal, that he could not have been convicted on Count One of the violation of 18 U.S.C. § 241 because there is no “right” to be a federal witness. This contention was properly rejected on the prior appeal.
Appellant also claims (a) that, unless both of the two alleged coconspirators are guilty, neither can be; (b) that, since there was no evidence that Lipsky knew Parks was to be killed to prevent her from exercising her right to testify, Lipsky could not be guilty of the crime; and (c) that if Lipsky was not guilty, neither was Pacelli. The evidence, however, clearly demonstrates that Lipsky knew that Parks was to be killed to prevent her from testifying. Pacelli told Lipsky after being informed of the existence of the subpoena that Parks had “ratted [him] out” and that Pacelli knew what he had to do, which Lipsky interpreted as an expression of an intent to do away with Parks.
Appellant argues that Judge Stewart abused his discretion in imposing sentence, since he inadequately disclosed his reasons for imposing a severe sentence. Whatever may be the trial judge’s duty in explaining a sentence, see
Dorszynski v. United States,
