A Fulton County Jail inmate killed himself late last week, jail officials said.

Jail staff found Reuben Boye-Owusu unresponsive in his cell Thursday night, apparently from having hanged himself, Fulton County Sheriff’s Office spokeswoman Tracy Flanagan told the Atlanta Journal-Constitution.

“Grady Memorial Hospital Emergency Medical Services personnel arrived at the jail and attempted to resuscitate the 25-year-old male inmate,” Flanagan said in an email. “He was taken to Grady where he was pronounced dead.”

The motive behind Boye-Owusu’s suicide was unclear.

Boye-Owusu had been booked into the jail on March 5, for violating his parole from a Jan. 20 arrest on a charge of possession of a firearm by a convicted felon.

He’d been arrested in August 2012 on simple assault charges and was put on probation on Jan. 10, just 10 days before his arrest for gun possession, according to jail officials and jail records.