Ohio ? A police officer pleaded not guilty Friday to killing his pregnant girlfriend, whose corpse was found in a park and whose toddler son gave investigators some of their strongest clues.

Bobby Cutts Jr. could be sentenced to die if convicted in the deaths of Jessie Davis and her unborn daughter.

Her body, with a nearly full-term fetus, was found more than a week later about 25 miles away in a remote area of a park.

Investigators believe Davis was killed June 14 in her home near North Canton but have not said how. Cutts is the boy’s father, and Davis’ family says he was also the father of the girl Davis had been due to deliver July 3.