Arkansas Department of Corrections officials are reporting an inmate has committed suicide inside of the Pine Bluff unit.

Officials say officers found 30-year-old Calvin J. Hammock hanging in his cell shortly after noon on Thursday, and attempts to revive him were unsuccessful.

According to a news release, Hammock was serving a three-year sentence for impairing the operation of vital public facilities.

According to Arkansas Department of Corrections records, Hammock is the fourth state prisoner to die by suicide this year.