The Lee Correctional Institution is a level 3 prison located in Bishopville, South Carolina.
The South Carolina Corrections Department tweeted that State Law Enforcement Division agents responded just before midnight Sunday to "an ongoing situation" at Lee Correctional Institution. The riot began around 7:15 p.m on Sunday (April 15).
Seven inmates were killed and 17 others were injured in a large riot that broke out Sunday night at a maximum-security prison in SC, the authorities said.
The department of corrections says all law enforcement officers who responded to the prison are safe and accounted for. Lee County Fire reports on Twitter that crews responded to a "mass casualty incident" and were assisted by Florence County EMS, Kershaw County EMS, Darlington County EMS, Lexington County EMS and Hartsville Rescue.More news: Woolworths hit with technical outage, checkouts unable to process sales
There wasn't any more information immediately available on the incident.
Lee Correctional Institution, which opened in 1993, houses about 1,500 male inmates.
Another inmate was killed during a fight at the facility in February, with two officers stabbed during a fight that broke out in Lee Correctional in 2015.
This is a developing story.