The issues raised on this appeal concern the legality of a stop and the subsequent search of appellant’s truck. The search uncovered fifty-seven pounds of marijuana concealed under the hood, and appellant was convicted on one count of possession, in violation of 21 U.S.C. § 841(a)(1), and one count of importation, in violation of 21 U.S.C. §§ 952 & 960. Appellant challenges the admissibility of the evidence obtained as a result of the search. The facts of the case, while simple, present one point that seems not to have arisen precisely in our many previous discussions of the requirements imposed on an officer who stops someone for questioning, and that is the weight an officer may place on a tip given in person by an unidentified informant.
United States border patrol agent Thomas was on duty at mid-day June 15, 1977, checking the citizenship of workers in a field two hundred yards north of the border between the United States and Mexico. While agent Thomas was thus engaged,, a man, described in the record only as wearing farmer’s overalls and a baseball cap and driving a late-model brown Mercedes Benz, approached him. The man pointed to a black pickup truck proceeding on a road about one hundred yards away and said, “The black pickup truck just loaded with weed at the canebreak.” The canebreak was next to the field and was thickly covered by cane plants fifteen to twenty feet high. Thomas knew that the general neighborhood and the canebreak in particular were the sites of previous incidents of drug smuggling and illegal entry of aliens. Without asking the unidentified man for his name or for any other information, agent Thomas radioed for assistance and began following the black pickup truck in his own vehicle. With the aid of two other border patrol units, Thomas stopped the pickup truck after following it about four and a half miles. The defendant was the sole occupant of the truck. Agents discovered the concealed marijuana after a conversation which we relate below when discussing the issue of consent to the search. We first examine the legality of the stop.
I
The appellant argues that the stop was unlawful because the declaration by the unidentified man was not an. adequate ground for Thomas to form a reasonable suspicion that criminal activity was occurring. We disagree.
A greater showing of the reliability of an informant’s statement is necessary to support probable cause for a search than is needed to support the reasonable, or founded, suspicion which is a prerequisite for a valid stop.
Compare Spinelli v. United States,
*763 Information from a citizen who confronts an officer in person to advise that a designated individual present on the scene is committing a specific crime should be given serious attention and great weight by the officer. Nevertheless, whether the information is sufficient to justify a stop must be evaluated with reference to the facts of each case, for there is no per se rule of reliability. 1
There is an important difference between this case and Adams v. Williams, in which the Supreme Court discussed the indicia of an informant’s reliability necessary to support a valid stop based on his tip. Here, since the informant was not known to the officer and cannot be traced, the officer’s testimony cannot be corroborated. But just as there is no per se rule establishing the reliability of a citizen’s tip to justify a stop in every instance, so too there is no per se rule requiring an officer to obtain the identity of the informant before he acts. In evaluating the reasonableness of the officer’s conduct in this case, we therefore must consider both the circumstances in which the tip was made and the facts which would justify the officer in acting without knowing the citizen’s identity or obtaining information for tracing him later.
Although this case is different from one where a tip is given by the victim of a crime,
see, e. g., United States v. Mahler,
Moreover, although the informant did not identify himself by name, he would have been available for further questioning if the agent had judged the procedure appropriate. Unlike a person who makes an anonymous telephone call, this informant confronted the agent directly. By thus presenting himself to the agent and doing so while driving a car from which his identity might easily be traced, the informant was in a position to be held accountable for his intervention. The reliability of the information was thus increased.
Finally, there are reasons to support the agent’s failure to converse further with the informant, to ask for his name, or to note the license of his car. The suspect was in a vehicle moving away from the agent when the tip came, and we can infer from the record that it was reasonable for the agent to use his time to radio for assistance and to set off in pursuit, rather than to question the informant. There is nothing in the record which should have caused the agent to doubt the reliability or good faith of the informant in tendering information.
*764 We conclude that the informant’s tip, considered in the light of the surrounding circumstances we have mentioned, was sufficient to justify the stop. The district court properly denied appellant’s motion to suppress the evidence as the product of an illegal stop.
II
After appellant was stopped, one of the agents asked the appellant, “May I look inside the truck?” The answer was in the affirmative, and the agent looked not only in the cab of the truck but also in the back cargo portion, and finally under the hood. He discovered the marijuana there. The appellant asserts that when the border patrol agent opened the hood he went beyond the scope of the appellant’s consent to search the truck.
The issue of whether or not consent to search was freely and voluntarily given is one of fact to be determined on the basis of the totality of circumstances.
Schneckloth v. Bustamonte,
AFFIRMED.'
Notes
. Some courts indicate that a citizen, who is not connected with the police or who is not a paid informant, is inherently trustworthy, when he advises the police a crime is being committed.
See, e. g., United States v. Unger,
