A father is behind bars, accused of severely beating his five-month-old son.
Louisville police say 19-year-old Joseph Johnson admitted he shook the baby, dropped him on the floor and threw him across the bedroom.
Police say the baby had severe swelling and bruising to his head and face and was last reported in critical condition, with bleeding in the brain.
Johnson is charged with first degree criminal abuse. He's in jail on a $50,000 bond.