Tech-savvy police used video cameras to arrest two suspects just seconds after they killed a teen in Queens yesterday, cops said.

The NYPD video unit remotely panned multiple cameras mounted in a Jamaica housing project and directed cops on the street to the spot where Sean Barnhill, 19, and Alexander Burgess, 16, allegedly shot Darryl Adams, 18, as he lay on the ground at about 12:30 a.m. on 159th Street near 107th Avenue.

Burgess and Barnhill were charged with murder and criminal possession of a weapon.