Southfield police Lt. Nick Loussia said the slaying occurred at the Quality Inn Hotel.
Loussia said the father dialed 911 at about 11:20 a.m. Thursday and said he needed police help. When officers arrived, they found the younger man with a hunting knife and the body of his father in a room where the older man had been staying, Loussia said.
Police did not immediately release the men’s names.
The son is expected to be arraigned in the next couple of days.