CINCINNATI — The gunman in Dayton who killed nine people had cocaine, an antidepressant and alcohol in his system during the mass shooting, and was cut down by a barrage of at least two dozen police bullets that penetrated gaps in his body armor, a coroner said Thursday.

Montgomery County coroner Dr. Kent Harshbarger said authorities found a pipe device and a baggie of cocaine on 24-year-old Connor Betts. Harshbarger also reported in his preliminary autopsy findings that Betts had more than 50 entry and exit wounds.

The coroner said police gunfire hit two people. One of them died, but Harshbarger said the gunman, not police, fired the lethal round.

Police investigators will review the medical records of the 17 who were wounded to determine if any of them were struck by the officers’ bullets, Biehl said.

Police haven’t yet determined a motive for the shooting.