(AP) — A 41-year-old Scottsbluff man has been accused of throwing his 6-year-old son to a floor and striking him.

Authorities say Joseph Hafner was arrested on Tuesday and charged with felony child abuse. A Scotts County jailer said Hafner remained in custody on Friday, pending $75,000 in bail. Hafner’s attorney didn’t immediately return a call from The Associated Press.

An arrest affidavit says the boy told school officials about being slammed down. A doctor at Regional West Medical Center told police the boy had bruises on his back and a shoulder and forearm.

The affidavit says Hafner told investigators that he had “lost it” when his son denied taking a key to a garage.