A Glendale police officer has resigned after an internal investigation found he violated department use of force policies.
Officer Joshua Carroll was responding to a report of a suspicious man in vehicle outside an apartment complex in June when things quickly escalated.
Body camera video shows Carroll approaching David Dulaney in a tan car with the windows up.
Dulaney appears frightened and tells the officer he is mentally and physically handicapped.
Just minutes later, Carroll is seen pulling Dulaney out of the car, throwing him on the ground, using a stun gun on him and repeatedly punched him in the back of the head.
Carroll said Dulaney was not complying, but investigators found Carroll used excessive force.
Carroll resigned in August before the City Could terminate him.