The thug pictured below is the cold-blooded killer wanted for gunning down a teen in Brownsville, police said.

Tipsters identified Djavan Perry, 20, as the murderous triggerman captured on chilling surveillance footage shooting Andre Pitts, 18, in the chest at 7:30 p.m. Sunday after the two men exited the elevator on the fourth-floor of a Lott Avenue apartment building, cops said.

Perry, who has prior weapons arrests, was recorded on another camera calmly walking away from the crime scene.

Pitts died at Brookdale Hospital.

The motive behind the killing remains unclear.