VIDEO: Two Marked Police Cars Torched in Florida

The search for gunmen who opened fire on two plainclothes Los Angeles police officers Sunday evening has ended with three people being detained and a small stretch of a residential street in South L.A. closed for the investigation, reports the Los Angeles Times .

The search wrapped up after midnight and now detectives are canvassing 65th Street off Broadway for shell casings and other evidence tied to a shooting that occurred about 5:45 p.m. Sunday, police said.

According to police, the two plainclothes officers were assigned to the 77th Street Division narcotics section and were driving in an unmarked police car.

"These [officers] were in plainclothes, in an area known for gang activity, narcotics sales and distribution," Richter said. "Now whether they were targeted as officers, that'll be determined. When you're a gangster and you're on the corner and you're illegally selling narcotics and a car drives up and two people get out – that's going to cause some problems."

It did not appear the officers were caught in an exchange of gunfire. Both suffered minor injuries and were treated at the scene. Paramedics removed bullet fragments from one of the officers' arms.