PHILADELPHIA (AP) - A 16-year-old driving a stolen vehicle slammed into a police cruiser during a chase, killing a police officer in the passenger’s seat, authorities said.

Andre Butler, of Philadelphia, was charged Saturday with third-degree murder, vehicular homicide and other charges in the death of Officer Isabel Nazario, 40.

Butler also faces aggravated assault charges stemming from the injuries to Nazario’s partner, Terry Tull, who was driving the cruiser and suffered broken ribs and a broken hip. Tull remained in stable condition Saturday after suffering broken ribs and a broken hip, according to police and a nursing supervisor at the Hospital of the University of Pennsylvania.

Butler, who was charged as an adult, initially fled the Friday night crash on foot but was captured a short time later. He was treated for minor injuries at a hospital.