At least 37 people were killed during clashes between armed inmates and security forces at a small prison in southern Venezuela, the state's governor said Wednesday.
Gov Liborio Guarulla said the bloodshed came after fighting erupted between inmates and their jailers Tuesday night in the prison in Puerto Ayacucho, capital of sparsely populated Amazonas state.
He said security forces raided the facility seeking to restore order in the prison, where the inmates had seized control several weeks ago.
"At midnight special forces showed up and through the night we heard gunfire and explosions," Guarulla said.
The office of Venezuela's chief prosecutor said on social media that it was investigating the incident. It said 14 prison guards were also injured.
Venezuela has around 30 prisons, many of which suffer from overcrowding and are dominated by criminal gangs that traffic in weapons and narcotics as well as plot crimes taking beyond prison walls.
The prison system, built to hold about 16,000 inmates, is currently estimated to house some 50,000 prisoners, according to the Venezuelan Prisons Observatory, which monitors prison conditions.
Venezuela is one of the world's most-violent countries, according to AP.