MANALILI V. COURT OF APPEALS - 280 SCRA 400
Narcotics officers were doing surveillance and chanced upon the accused in a cemetery who seemed to be high on drugs. He tried to resist the police officers and upon inquiry, found that the accused was possessing what seemed to be crushed marijuana leaves.
A stop-and-frisk was defined as the vernacular designation of the right of a police officer to stop a citizen on the street, interrogate him, and pat him for weapons. It has been held as one of the exceptions to the general rule against searches without warrant.