Jon "War Machine" Koppenhaver, the former mixed martial arts fighter arrested in August after allegedly beating his ex-girlfriend nearly to death, tried to commit suicide in his jail cell Tuesday night, CNN reports.

Koppenhaver went on the run from police after popular porn performer Christy Mack reported he attacked her and posted photos of some of her injuries, which included 18 broken bones in her face, broken teeth, a fractured rib, and a ruptured liver. He's currently in jail at the Clark County Detention Center in Las Vegas.

A corrections officer found Koppenhaver unresponsive Tuesday, hanging from his bunk by a torn piece of linen. The officer cut him down, aborting the apparent suicide attempt, and he's now being kept in a medical isolation unit.

Koppenhaver reportedly left behind a suicide note, but its contents haven't been made public. His attorney told TMZ there were multiple letters found in the cell, and one of them was addressed to Mack.

Koppenhaver had been scheduled to show up to a court hearing for a possible plea deal later that day. He's been charged with domestic battery and attempted murder.

[h/t TMZ]