PALMDALE (CNS) — Three male suspects entered a Palmdale home and pistol-whipped one of the residents, authorities said.

The attack was reported at 9:34 p.m. Sunday in the 4000 block of Stable Drive, Lt. Steve De Jong of the Sheriff’s Palmdale Station said. The suspects, who wore dark clothing, fled following the attack.

The victim was the father of one of the other occupants of the home, De Jong said. He was taken to a hospital with a head injury from the pistol-whipping.

Deputies were investigating the motive for the attack.

“The victim is not cooperating,” the lieutenant said.