Newton ? A new charge of first-degree murder has been filed against a man accused in the abuse death of his girlfriend’s toddler son.

The Wichita Eagle reported that 26-year-old Chad Carr already had been charged with aggravated battery and child abuse for injuries to 19-month-old Vincent Hill.

The boy died in late March, and the murder charge was filed Friday after prosecutors received the results of specialized testing on the boy’s brain.

Harvey County Attorney David Yoder says he believes the evidence will show that the cause of death was a combination of injuries. He says it appears the boy was beaten and suffocated.

The toddler’s mother, Katheryn Nycole Dale, previously was charged with child endangerment, child abuse and aggravated battery over the injuries to her son.