John Allen Muhammad

Age: 48

Summary: spree killer believed to be the mastermind behind the sniper attacks that left 10 people dead in a killing spree that terrorized the Washington, D.C. area for three weeks in October 2002, in which victim after victim was shot down while doing everyday chores, including shopping, pumping gas, and mowing the lawn, but who never explained his motives.

Cause of Death: Executed by lethal injection

Born: December 31, 1960

Died: November 10, 2009

Location: Jarrett, Virginia