Harris County Sheriff's investigators are seeking the public's help identifying three teenagers who are suspects in an ambush robbery that ended in a shootout three weeks ago in a Channelview nightclub's parking lot, leaving one dead and two wounded. The sheriff's office on Sunday released detailed descriptions and drawings of the trio seen riding in a champagne-colored sedan through the parking lot of the Diamante Negro Disco club. According to investigators, 52-year-old Inocencio Quiroga-Alvarez was in the club's parking lot at 15934 Interstate 10 East about 2 a.m.