WARREN, Ohio (WKBN) – A Warren man found guilty of three felony charges in the death of a 3-year-old boy was sentenced on Monday.

Arthur Harper was sentenced to 15 years to life in prison.

In August, a jury found Harper guilty of murder, felonious assault and child endangering. 

Police said he was babysitting his girlfriend’s 3-year-old son, Russell Cottrill, last November when the boy suffered head trauma. He later died at the hospital. This morning the child’s mother addressed the court begging the court for the maximum sentence allowed.

Monday, Russell’s mother addressed the court, begging for the maximum sentence allowed.

“I will never see my son grow up, never see him get his first girlfriend, go to school, go to college, get married,” she said. “All that was taken from me.”

Watch: Mother of murdered Warren boy speaks out against defendant

Judge Peter Kontos told Harper that if it were up to him, he’d “never see the light of day again.”

In addressing Harper, Judge Kontos said the injuries that the child received weren’t an accident, saying he tossed the kid around, hitting the child’s head on the ground on many occasions.