? A manhunt is underway Thursday for a Newark man who police say killed for sport.

Authorities say Arthur Tiggs, 26, shot 27-year-old Lance Pettiford in the head outside the Cave Lounge on Halsey Street Sunday. According to investigators, Tiggs earlier told friends he wanted to celebrate his birthday by killing someone. The victim?s mother and friends gathered at a memorial at the scene to call for justice. Pettiford?s mother wants Tiggs to spend the rest of his life in jail.

Investigators searched for Tiggs at his home, but were told he headed south. They suspect he might be in Atlanta or Florida.