BELLEVUE, Neb. -- A 22-year-old man shot to death outside of his father's east Houston home was on leave from Offutt Air Force Base in Nebraska.

Family members say Albert Castillo Jr. was an Airman First Class and active duty. He was on a two-week leave to visit family and friends in Houston, where he grew up.

Sunday evening, as he was standing outside his father's house, he was shot to death. Police say the shooter had an "AR-15 style rifle" and sped off from the scene. A suspect has not been located.

Family members say Castillo will be given a military burial with honors, but arrangements have not been finalized.