Now, one week later, the long-term response to this crisis seems unclear. On Saturday, two days after Christmas, Cadarian Connell Parker, 19, was shot and killed on Houston Street on Killeenâs north side. A 5-year-old child was wounded in that same shooting. The following day, three 18-year-old males were injured in a shooting that was caught on video in the 2700 block of Alma Drive. Shyheim Khali Matthews, 18, has been charged with three counts of aggravated assault-bodily injury with a deadly weapon in connection with that incident. During a Monday press conference, Killeen Police Department Chief Charles Kimble stated very definitively that the incidents are gang related. Specifically, the Young Paper Chasers and the K-Town Mafia are the two gangs involved. He described these as âhybridâ gangs, without an identifiable leader and who make efforts to conceal their identity.