WATERLOO (KWWL) -
A Waterloo man is behind bars, amid accusations he assaulted his father.
Waterloo Police arrested 26-year-old Cody Cook early Sunday for aggravated domestic assault and willful injury charges.
Police found Cook's father, 59-year-old Martin Cook, with head injuries.
Martin Cook was taken to the University of Iowa Hospitals and Clinics for a brain bleed.
The Courier reports that police initially believed the assault was related to a botched robbery.