According to US v. Anchondo, what may prompt an officer to search a person?

In the context of US v. Anchondo, the prompting of an officer to search a person is closely tied to the established legal precedent regarding the use of trained K9 units in drug detection. When a K9 alerts to the presence of narcotics in or around a vehicle, it serves as an indication that contraband may be present. This K9 alert can establish probable cause, which justifies further action by the officer, including the search of an individual associated with the vehicle.

The basis for this is rooted in the premise that a trained dog’s alert is considered reliable evidence that can support the belief that criminal activity is occurring or that illegal substances are present. Therefore, the alert from the K9 plays a critical role in the officer's decision-making process, leading to legitimate grounds for conducting a search.