Fatal Shooting Erupts Over $4 Dispute: Witness Recounts Pleas for Mercy.

A man was charged with murder and attempted murder after fatally shooting one customer and wounding two others at a Detroit gas station in a dispute over a small purchase. The clerk had locked the door after an electronic purchase was rejected, and the shooter threatened to shoot everyone inside unless the door was unlocked. The shooter fled the scene after the clerk unlocked the door.