NEW : Texas officer Norman , bystander killed by gunman . NEW : Jimmie Norman , 24 years , had been with department for 53 . NEW : Other man killed was apparently coming to his aid . The pursuit started after a driver refused to stop when a Bellaire police officer tried to pull over his vehicle , Houston police spokesman John Cannon said . The suspect is listed in critical condition at a hospital .
NEW : Texas officer Norman , bystander killed by gunman . NEW : Jimmie Norman , 24 years , had been with department for 53 . NEW : Other man killed was apparently coming to his aid . The suspect is listed in critical condition at a hospital .