Jerald Lorenz of Butler Township, charged with felony assault for causing toddler son to suffer fractured skull, broken rib and other injuries.

BUTLER TWP — An infant boy suffered a fractured skull, a broken rib, bruises and other injuries at the hands of his father at the family's apartment on Colleen Street, authorities said.

Butler Township police last week charged Jerald L. Lorenz, 37, with felony assault in the incident, which left the 20-month-old hospitalized in Pittsburgh.

Lorenz has been in the Butler County Prison since Feb. 12 on an unrelated domestic relations warrant and a probation detainer. He is to be arraigned Thursday on a list of charges for allegedly abusing his son between Nov. 22 and Dec. 6, 2018.

Lorenz is charged with two counts of aggravated assault of a child and one count of child endangerment, all felonies. He also is charged with a misdemeanor count of simple assault and a summary count of harassment.

Police said Tuesday that the infant remains with his mother and siblings, and they believe the child is “doing fine and is going to make a full recovery.”

This is an excerpt — pick up Wednesday's Butler Eagle to read more about the case.