the vicinity of Lincoln, Illinois. The record does not disclose who observed the van and notified the police, but defendant’s brief states “Officer Kettman believed the information was called in from a service station” in Lincoln.
After his van was stopped, defendant left the vehicle. Upon being asked for 'his driver’s license, he replied that he did not have any. Kettman’s fellow officers shone their flashlights into the windows of the van and observed numerous persons lying inside under blankets. Defendant was put under arrest at the scene and the twenty occupants of the van were removed and searched “for their own protection.” Kettman asked defendant “if he was hauling wetbacks,” and he admitted that he was. He was arrested for driving without a driver’s license.
A motion to suppress was filed, urging the district court to exclude “all evidence and testimony concerning the possession of alleged illegal entrants being present in*his [defendant’s] motor vehicle on June IS, 1971.” The principal ground for the motion was that the only basis for stopping the van was the above-quoted police bulletin which contained “no reference to the identity of the person who supplied the information nor to the credibility or reliability of the informant.”
Careful analysis requires recognition of the fact that three legally separable events, viz., stopping the van, arresting defendant and searching the van, occurred in rapid succession after Corporal Kettman turned on his flashing light behind defendant’s van. But stopping the van, briefly questioning the occupants, and observing anything which could be seen from outside the van constituted only an investigatory stop. Whiteley v. Warden, 401 U.S. 560, 566-567, 91 S.Ct. 1031, 28 L.Ed.2d 306. This was followed by the arrest of Hernandez and the search of the van.
Because of the information contained in the police bulletin, it is clear that Corporal Kettman had authority to stop defendant and conduct temporary questioning. Under the rationale
of Terry v. Ohio, 392 U.S. 1, 22, 88 S.Ct. 1868, 1880, 20 L.Ed.2d 889, we conclude that the facts available to Kettman at the mo‘ment he stopped and questioned defendant “ ‘warrant [ed] a man of reasonable caution in the belief’ that the action taken was appropriate.” As Chief Justice Warren there observed, “[A] police officer may in appropriate circumstances and in an appropriate manner approach a person for purposes of investigating possibly criminal behavior even though there is no probable cause to make an arrest.”
A recent decision elaborating these principles is Adams v. Williams, 407 U.S. 143, 92 S.Ct. 1921, 32 L.Ed.2d 612, where the Supreme Court sustained an investigatory stop of a suspect in a parked car. In that case the “stop and frisk” officer had been advised by an informant that “an individual seated in a nearby vehicle was carrying narcotics and had a gun at his waist” (at p. 145, 92 S.Ct. at p. 1922.) As the Court there stated:
“The Fourth Amendment does not require a policeman who lacks the precise level of information necessary for probable cause to arrest to simply shrug his shoulders and allow a crime to occur or to allow a criminal to escape. On the contrary, Terry recognizes that it may be the essence of good police work to adopt an intermediate response. A brief stop of a suspicious individual, in order to determine his identity or to maintain the status quo momentarily while obtaining more information, may be most reasonable in light of the facts known to the officer at the time.” Id.* at 145-146, 92 S.Ct. at 1923.
Applying these principles to the present case, we believe that Corporal Kettman acted justifiably in responding to the police bulletin even though the bulletin was insufficient to support an arrest or search warrant. Here the police bulletin described defendant’s vehicle by year, model and license plates and