The murder suspect accused of killing his mother and another woman died of blunt force trauma to the head, according to preliminary autopsy results from York Co. Coroner Sabrina Gast.
Joshua Matthew Grose, 34, was pronounced dead at Piedmont Medical Center at 3:05 a.m. Sunday after emergency workers transported him from the Moss Justice Detention Center, where he had become self-destructive and combative, according to sheriffs office officials.
Early Sunday morning, officers found Grose trying to drown himself in his jail cell toilet. He also had rammed his head against the cell wall a number of times, according to reports. He was put in a restraint chair and placed on suicide watch.
Gast said there was no way to tell how many times he hit his head.
She would not comment on any possible drug or substance use. That would have to wait until toxicology tests come back, which can take up to six weeks to return.
Grose is accused of killing two women Friday night by running them over with a stolen vehicle, police say. Both Sandra Thomas, owner of the car, and Sandra Grose, mother of the suspect, died from blunt force trauma to the chest, according to Gast.