UNION, S.C. -- Authorities say an inmate has died at the Union County jail.

Investigators said 34-year-old Robert Gregory was found unconscious in a cell around 5 a.m. Friday as he awaited a bond hearing. Paramedics could not resuscitate him.

Gregory was behind bars after he was arrested on a criminal domestic violence charge.

Union County Sheriff David Taylor says the State Law Enforcement Division is investigating the death and an autopsy on Gregory has been ordered.