Appellant Billy Lee Walter appeals from the trial court’s denial of his motion to suppress evidence and his subsequent conviction for the offense of possession of cocaine in an amount of four grams or more, but less than two hundred grams. See Tex. Health & Safety Code Ann. § 481.115 (West 1992). At a pre-trial hearing, appellant moved to suppress the evidence, claiming that it was seized during an illegal search. The trial court denied appellant's motion. Appellant waived his right to a jury, was found guilty by the court, and was sentenced to ten years in prison. In this appeal, appellant challenges the trial court’s overruling of his motion to suppress and subsequent refusal to exclude the evidence at trial. We will reverse and remand the cause to the trial court.
FACTUAL AND PROCEDURAL BACKGROUND
While on patrol duty on the evening of May 7, 1997, Sergeant Victor Vasquez of the San Angelo Police Department was approached just before 10:00 p.m. by an unknown person who witnessed suspicious activity in Mountain View Park. The witness told Vasquez that while he was playing basketball in the park, he observed what he believed to be a series of drug transactions. He reported that he saw several people drive up to the park, get out of their cars, and approach a man sitting at a picnic table next to the basketball court. These individuals would walk over to the park bathrooms, stay there briefly, and return to the man at the table. They would then get back into their cars and *856 leave the park, and the man would remain at the table. According to the record on appeal, Officer Vasquez did not obtain any description of the man at the picnic table or of the other individuals from the witness. Because the park was not within his own patrol district, Vasquez immediately called Officer Jeff Carrol of the San Angelo Park Police and asked him to investigate. Vasquez reported to Carrol that a suspicious individual was possibly conducting drug sales in the park area and relayed the witness’s story. He instructed Carrol to use his own discretion in stopping any vehicles or approaching any individuals. In addition to the fact that the tip he was acting upon was a report from an unidentified citizen received secondhand from Officer Vasquez, Carrol had no description to help him identify any suspicious individual, and he had no information regarding any physical characteristics, age, race, clothing, or vehicle upon which to base a stop or detention.
Officer Carrol arrived about five to ten minutes after talking to Vasquez. He did not see anyone actually in the park, but did notice a pickup truck leaving the park area. There were no other vehicles traveling in the area. Carrol drove up behind the departing truck and stopped it after the driver failed to signal his intent to turn prior to one hundred feet of the intersection. 1 The officer identified appellant as the driver. When asked by Carrol where he was coming from and what he was doing, appellant replied that he was coming from Mountain View Park where he and his passenger had been playing basketball. Carrol testified that he was suspicious of appellant’s story because appellant was wearing a long-sleeved button-down shirt, blue jeans, and cowboy boots, and he did not observe a basketball in the truck. The passenger, who also wore jeans, similarly claimed that they were coming from the park where they had been playing basketball.
After verifying the identities of the two men, Carrol initiated a warrant check using appellant’s license number. He also requested consent to search the truck, but appellant refused. Carrol then contacted Officer Miller, a canine handler from the San Angelo Police Department, and asked him to come to the scene and perform an exterior “sweep” of the vehicle with a drug-sniffing dog. Next, another officer arrived at the scene, apparently serving as Carrol’s “back-up.” At some point, appellant and the passenger got out of the truck. 2 Miller arrived within ten to fifteen minutes. Carrol testified that the warrant check had not yet been completed when Miller arrived, but that if the check had been completed and come back clear, he would not have continued to detain appellant.
Miller performed a routine preliminary visual check of the exterior of the truck to ensure that the dog would not be harmed during the search. He testified that he could easily see inside the vehicle during his exterior check, because both appellant and the passenger had left their doors open when they got out of the truck. When he came around to the passenger side, Miller squatted down and saw a clear plastic bag on the floorboard between the door and the seat. The bag contained a green leafy substance that Miller believed to be marihuana. He notified Carrol, who seized the bag and searched appellant. In appellant’s shirt pocket, Carrol found a rather large clear bag of an off-white powdery substance that he believed to be cocaine. 3 Office Miller then searched the truck with the dog and found a brick of *857 marihuana and various other drugs, which Carrol also seized.
In his sole point of error, appellant claims that the trial court erred in (1) failing to sustain his motion to suppress, and (2) admitting at trial evidence of the illegally seized cocaine. Appellant argues that Officer Carrol did not have reasonable suspicion to continue to detain him after the traffic stop, and therefore the seizure of the cocaine was the result of an illegal detention and search of his person and vehicle under the Fourth Amendment to the U.S. Constitution. U.S. Const. Amend. IV.
DISCUSSION
The United States Supreme Court has held that determinations of reasonable suspicion and probable cause should be reviewed
de novo
on appeal.
See Guzman v. State,
The appellate court should give due deference to the trial court when reviewing the trial court’s ruling on a mixed question of fact and law.
See Guzman,
A trial court’s ruling on a motion to suppress lies within the sound discretion of that court.
See Villarreal v. State,
Officer Carrol’s stop of appellant was valid. Because he saw appellant commit a traffic violation by failing to properly signal before a turn, Carrol had an objective basis for stopping the truck. See Tex. Transp. Code Ann. § 545.104 (West 1996). His subsequent detention of appellant pursuant to that violation is considered to be valid as well:
As long as an actual violation occurs, law enforcement officials are free to enforce the laws and detain a person for that violation, regardless of whatever the usual practices or standards of the local law enforcement agency are and regardless of the officer’s subjective reasons for the detention.
Garcia v. State,
The State sets forth two alternative theories as to why Officer Carrol’s actions were reasonable and justified. First, the State argues that it is reasonable for an officer to check the validity of a presented driver’s license, to check the driver for outstanding warrants, and to detain the driver for as long as is necessary to do so.
See Davis v. State,
The State relies on
1979 Pontiac Automobile
for the proposition that a police officer may detain a person for a canine sweep whether or not the officer has reasonable suspicion that the person may possess narcotics.
See 1979 Pontiac Auto.,
Detaining a person while a warrant check is being run has been held not to violate the Fourth Amendment. See id. at 245. However, calling for a canine sweep to be performed in the meantime exceeds the bounds of what a police officer may do in a stop for a traffic violation without reasonable suspicion. See Mohmed, 977 *859 S.W.2d at 628. We believe that Mohmed correctly states the law and that 1979 Pontiac Automobile does not; we therefore follow Mohmed and Crockett in rejecting the State’s argument that a police officer does not need reasonable suspicion to conduct a canine sweep.
The facts of the present case are somewhat unusual in that appellant was validly stopped by the Officer Carrol for a traffic offense, but at some point the nature of the detention changed to a drug-trafficking investigation. Our analysis is aided by analogizing Fourth Amendment law applied in the situation of a
Terry
frisk, which, like a canine sweep, is a lesser Fourth Amendment intrusion than a full search.
See Terry v. Ohio,
The State’s second theory is that Officer Carrol had reasonable suspicion to justify the canine sweep, even if he had not run a warrant check on appellant. The Fourth Amendment is not a guarantee against all searches and seizures, but only against unreasonable searches and seizures.
See United States v. Sharpe,
In
Terry v. Ohio,
the United States Supreme Court set forth the guidelines for determining whether an investigative detention is reasonable: (1) whether the officer’s action was justified at its inception, and (2) whether it was reasonably related in scope to the circumstances which justified the interference in the first
*860
place.
See Terry,
A search that is reasonable at its inception may violate the Fourth Amendment by virtue of its intolerable intensity and scope.
See Terry,
Officer Carrol stopped appellant for a valid reason and detained him because he had received a report of suspicious activity possibly involving narcotics in Mountain View Park. We must evaluate whether the totality of the circumstances gave rise to articulable facts and rational inferences from those facts which would support reasonable suspicion for Officer Carrol to convert a traffic stop into a drug-trafficking investigation.
See Valencia v. State,
Allowances are made for the fact that an officer must make hasty decisions under tense and uncertain circumstances.
See Rhodes,
Various factors have been held to support reasonable suspicion of drug activity to warrant further questioning and the calling of a canine unit, even when the initial stop is for a traffic violation.
See United States v. Finke,
Several independently inconclusive factors in combination undoubtedly create reasonable suspicion of criminal activity in
*862
many cases. In
Alexander v. State,
two police officers observed Alexander in his car in a city park three hours past the curfew established by a city ordinance.
See Alexander v. State,
In
Doyle v. State,
the court held that reasonable suspicion existed where an officer received specific information from an informant that the Doyles had marihuana in the trunk of their car.
See Doyle,
The temporary detention of an automobile to allow an olfactory inspection by a police dog trained to detect the odor of illegal drugs does not violate the Fourth Amendment when based on a reasonable suspicion that the automobile contains narcotics.
See Mohmed,
In cases where no articulable facts existed to support reasonable suspicion, courts have found that such detentions violate the Fourth Amendment.
See Brown v. Texas,
Under the totality of the circumstances, Officer Carrol could not reasonably suspect appellant of criminal activity. Appellant has shown that his constitutional rights were violated. His sole point of error is sustained.
CONCLUSION
We hold that the trial court erred in refusing to suppress evidence of the cocaine. Accordingly, the trial-court judgment is reversed and the cause is remanded.
Notes
. Appellant does not contend that the initial traffic stop for failure to signal was invalid or constitutionally improper.
. It is not clear from the record exactly when appellant and his passenger got out of the truck. However, it appears that they were already out by the time Officer Miller arrived. Miller testified at trial that when he arrived at the scene, the two men were sitting on or by the tailgate of the truck, and both doors to the truck were open.
.Laboratory tests confirmed that the powdery substance was cocaine.
. Appellant does not claim that his detention was a violation of the search and seizure provision of the Texas Constitution. Tex. Const, art. I, § 9. He appeals only under the Fourth Amendment to the U.S. Constitution. However, we note that the Texas Constitution follows the federal standard for an investigatory detention as set out in
Terry. See Rhodes v. State,
. The State also contends that the fact that there was no basketball in appellant’s vehicle shows that appellant's claim of playing basketball was evidently untrue. While the absence of a basketball tends to support the inference that appellant was lying, we do not *861 find that it has great bearing in determining whether Officer Carrol acted reasonably.
