A Daytona Beach dad walks in on a horrific scene and decides to take matters into his own hands...literally.

Cops say the dad beat 18-year-old Raymong Frolander unconscious after he found him sexually abusing his son.

When officers arrived, the suspect was motionless on the living room floor, with several knots on his face and bleeding from the mouth.

The age of the boy was not released, but Frolander is being charged with sexual battery on a child under 12.

He's being held without bond.