Christopher Zawahri, 25, was shot dead on June 7, 2013, in Santa Monica, California. The killing occurred inside the family home on Yorkshire Avenue when Christopher’s younger brother, John Zawahri, shot their father, Samir Zawahri, and Christopher before setting the house on fire and leaving the scene.

After the family killings, John carjacked a motorist at gunpoint and forced her to drive him toward Santa Monica College, firing at other vehicles along the way and then continuing to shoot on the college campus. The rampage left multiple people dead and several injured. A handwritten note found on John expressed apologies for killing his family and farewells to friends, and investigators examined his mental health history and how he obtained an AR-15-style rifle assembled from legally purchased parts despite being prohibited from owning firearms.

If anyone knew Christopher, his routines, or what happened at the Yorkshire Avenue home that morning, please share information that could help complete the record of his death.