John David Killen, 41, was shot to death on August 10, 2022, at the Altoona, Iowa, residence he shared with his girlfriend, Marique Ruth. Killen, a diesel mechanic who enjoyed fishing, camping, trucks and music, was struck four times during a heated argument that reportedly involved financial concerns and ongoing relationship problems. Ruth later admitted to shooting him and said Killen was unarmed and not threatening her; she did not attempt to call for help on her cell phone after the shooting.

Killen’s family and friends held a graveside memorial on August 20, 2022, at Carlisle Township Cemetery.

If anyone knew Killen, his routines, or has information about the events at the Altoona residence, please share what you know.