Leavenworth ? Leavenworth police are trying to determine whether a stun gun is to blame for the death of a 46-year-old man.

Edward Stephenson died Sunday evening soon after officers used their Tasers on him three times after he became unruly in a police car.

Police Chief Pat Kitchens says Stephenson ran into the Cyclone Bar yelling that someone was trying to kill him. WDAF reports that officers found Stephenson sitting in the street, yelling and screaming.

Kitchens says Stephenson was placed in the back of a police car and became violent, head-butting the door and trying to kick out the window. He died at a local hospital less than five minutes after being shocked with the stun guns.

The chief says he has no reason to believe the stun guns caused the man’s death.