Police have made an arrest in the fatal shooting of a 19-year-old woman in the parking lot of a West Mifflin restaurant.

Investigators have arrested James Nalls, the victim's boyfriend, in connection with the shooting.

Nalls is accused of shooting Olson in the neck on Monday night in the parking lot of the Applebee's restaurant on Lebanon Church Road.

Olson, of West Mifflin, died at UPMC Presbyterian Hospital on Tuesday.

Police arrested the suspect while he was in jail on unrelated charges.

He was arraigned overnight on charges of criminal homicide and firearms violations.

Nalls is being held in Allegheny County Jail.

Investigators were looking into the troubled relationship Olson and Nalls shared before her death.

Officials report that the couple had a violent encounter last summer when Nalls was accused of assaulting Olson while she was eight months pregnant.