Man in his 20s killed, mother injured after shooting in northeast Houston, HPD saysA gathering for mourners after a funeral ended in tragedy after a man was killed and his mother was injured in a shooting, HPD confirms. A gathering for mourners after a funeral ended in tragedy after a man was killed and his mother was injured in a shooting, HPD confirms. A gathering for mourners after a funeral ended in tragedy after a man was killed and his mother was injured in a shooting, HPD confirms. A gathering for mourners after a funeral ended in tragedy after a man was killed and his mother was injured in a shooting, HPD confirms. HOUSTON, Texas (KTRK) -- A gunman in a fatal double shooting involving a mother and son in northeast Houston is on the run, and an active investigation is underway, authorities said.