COLUMBIA, S.C. (AP) — Prisoners armed with homemade knives rioted for more than seven hours inside a maximum-security facility, leaving seven inmates dead, and bodies were “literally stacked on top of each other,” an inmate told The Associated Press on Monday.

At least 17 prisoners were seriously injured as inmates fought uninterrupted before authorities regained control of Lee Correctional Institution about 3 a.m. Monday, South Carolina prisons spokesman Jeff Taillon said.

Source: South Carolina Inmate: Correctional Officers ‘Sat on Their Collective A****’ During Deadly Prison Riot