The watchful eyes of an observant officer helped land two men and a woman in jail.
Around 1 a.m. Friday, the officer noticed three people sitting in a car parked in front of a strip mall at Callaghan and Babcock as he drove by, police said.
The officer approached their car and spotted a gun on the floorboard.
Two men and a woman were detained. A drug dog was called in and narcotics were found in the vehicle.
Police are investigating whether a big screen TV found in the car was stolen.
Police have not said what charges would be filed.