The Idaho Department of Correction says it's investigating an inmate's apparent suicide at Idaho State Correctional Institution south of Boise.
The agency said Monday that Brandon Munk was found hanging in his cell on Saturday at just after 6 p.m.
Efforts to restore his pulse were unsuccessful, and he was pronounced dead later at a Boise hospital.
The 34-year-old Munk had been sent back to prison in January 2010 after violating terms of his probation following a forgery conviction in 2009 in southeastern Idaho's Bannock County.
He had been scheduled for release next year.
IDOC has asked the Ada County Sheriff's Office for help investigating Munk's death.