Daniel Nixon admitted to detectives he intentionally squeezed the infant on at least two occasions, with significant force, because the infant was crying and he was frustrated.
Detectives say the mother 25-year-old Sara Nixon, and the child's father 25-year-old Daniel Nixon, originally brought the infant to the hospital for digestive problems and a bruise to her leg.
Detectives learned from doctors the infant suffered from over 20 rib fractures.
Detectives conducted interviews with the parents and identified inconsistencies in the father’s statements.