Fоllowing a jury trial on an information charging him with a violation of section 11530 of the Health *530 and Safety Code (possession of marijuana) and one prior felony conviсtion for the sale of heroin (admitted prior to trial), defendant was found guilty, denied probation and sentenced to the state prison for the term prescribed by law. He now appeals, from the judgment of conviction.
On November 10, 1964, about 6 or 6:30 p.m., Detectives Willis and Richenherger of the San Bernardino County sheriff’s office were prоceeding southerly on Riverside Drive in Rialto in an unmarked sheriff’s vehicle with Detective Willis driving. It was dark and had been raining intermittently. The officers intended to turn east on Slover Street to continue a surveillance of a suspected narcotics peddler’s house which was located less than a quarter of a mile from the intersection оf Slover and Riverside Drive. As they neared the intersection they saw a vehicle turn onto Riverside Drive in front of them. Upon noting that the vehicle was one defendant had previously been seen driving and believing that the suspected narcotics peddler might also be in the vehicle, Willis pulled closer whereupon he recognized defеndant at the wheel. There was no other occupant. Willis knew the defendant from a previous encounter in connection with his arrest and conviction on a сharge of selling heroin and knew that defendant had been committed to the California Rehabilitation Center, returned to court, placed on probation, and was still on probation. Shortly prior to this incident, the probation officer had asked Willis if he had any information concerning the defendant’s activities. Willis had therefore intеnded to look the defendant up to make such inquiries. 1 Upon recognizing defendant and noting that he came from the direction of the home of the suspected nаrcotics peddler, the detectives decided to question him concerning his activities and seek any information he might have concerning the suspected peddler. When the detective turned on the red light and siren, defendant abruptly stopped his vehicle on the right shoulder. Detective Willis stopped immediately to the rear. As Richenherger stepped out of the sheriff's vehicle and approached defendant’s car from the right, defendant looked back through the window, saw Richenherger, bolted from the driver’s side of the vehicle and ran towards the center of the highway. As he ran, he reached into his jacket and threw a small white *531 package across the street. Detective Willis drew his gun, pursued defendant and apprehended him while Detective Richenberger retrieved the white package. When the three rеturned to the sheriff’s vehicle the officers opened the package and Detective Willis determined that it contained marijuana. Defendant was thereupоn taken into custody.
Defendant contends that the white package and evidence as to its content should have been excluded on the ground that it was illegally оbtained as a direct result of unlawful conduct of the officers in stopping defendant without probable cause.
An officer may stop a pedestrian or motorist for questioning under circumstances short of probable cause for arrest.
(People
v.
Mickelson,
In the circumstances here presented, it is our opinion that the officers were justified in stopping defendant for routine questioning and investigation. There is no suggestion that the officers intended to arrest defendant or conduct a search of his person or vehicle. Officer Willis’ knowledge of defendant's background involving narcotics, his prior conviction for the sale of heroin, аnd his probationary status are significant factors in determining whether the officers acted reasonably.
(People
v.
Currier,
The white package and contents were, therefore, properly received in evidence. If in response to a reasonable official inquiry, a suspect voluntarily reveals incriminating evidence, he may hot later complain that he acted on an implied threat of unlawful conduct of the officers.
(People
v.
Williams,
Badillo
v.
Superior Court,
Appellant complains that the white package was received in evidence without proper foundation because its content was not identifiеd in open court prior to its introduction. He therefore complains that it was prejudicial error to refer to the package as one containing marijuana. The error, if any, was clearly nonprejudicial. The package was properly identified as the one picked up by Detective Richenberger and delivered sealed to the crime laboratory chemist, a qualified expert in the identification of narcotics, who testified that the package contained marijuana.
(People
v.
Marich,
Defendant contends that the superior court had no jurisdiction because he was committed by the magistrate without probable cause. Since no transcript of the preliminary examination has been made a part of the record on appeal, the question as to whether the evidence at the preliminary examination disclosеd facts sufficient to constitute probable cause is not reviewable on this appeal from a judgment of conviction.
(People
v.
Jones,
Judgment affirmed.
McCabe, P. J., and Kerrigan, J., concurred.
A petition fоr a hearing by the Supreme Court was denied August 8, 1966.
Notes
Detective Willis testified that he had information that the defendant was again using narcotics, associating with users and buying narcotics from the suspected peddler. This testimony, however, was stricken when the prosecution refused to reveal the identity of the informant.
