The teen who fled the country after allegedly gunning down a 15-year-old boy when a bitter gang-fueled brawl erupted at a Queens park has been arrested.

Zahir Davis, 18, was nabbed Friday night – nearly two weeks after Pierre was brutally murdered surrounded by a crowd of teens in Roy Wilkins Park – according to the NYPD.

Police said the alleged killer fled the country for Jamaica the day after the heinous caught-on-camera crime and was arrested as soon as he landed back in New York City.

Police Commissioner Jessica Tisch announced Davis’ arrest Saturday morning.

Pierre was part of a group of teens who gathered in the park at around 6:20 p.m. on April 16 for an  Instagram-hyped water gun fight when the melee erupted, police said.

Horrifying video captured the moment Davis allegedly pulled the trigger – sending Pierre to the ground and bystanders fleeing in terror.

Pierre, who was shot in the chest, was pronounced dead at Jamaica Hospital Medical Center.