QUITO, Ecuador — Four inmates died and more than 30 others were injured Sunday when a riot broke out at a prison in Ecuador, corrections officials in the South American country said.

The riot stemmed from the “reorganization of inmates” to a new maximum-security prison that will soon begin operating in a different province, according to a statement from Ecuador’s prison oversight agency. The violent incident happened less than two months after 14 inmates died at the same facility in what authorities described as a dispute between gangs.

The prison is located in Machala, a coastal city in southwest Ecuador. Officials said authorities regained control of the facility following the riot, which also injured one police officer.

The conditions of the injured were not immediately clear Sunday.

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