Rory Davis was arraigned Wednesday on child abuse charges after his two-month-old son suffered skull fractures and three broken ribs. 

Davis, 30, pleaded not guilty to charges of second-degree assault and two counts of endangering the welfare of a child and returned to Chautauqua County Jail. 

Jamestown Police say they were called to a home on Myrtle Street in Jamestown early Tuesday for reports of an injured child. 

A two-month-old child was initially taken to UPMC Chautauqua WCA for treatment and was later transferred to Oishei Children's Hospital for trauma care. He remains in very serious condition. 

Brandi Briggs, the infant's mother, said the boy had multiple seizures Tuesday night and a swollen brain but more tests will be needed to determine the extent of the damage.