Authorities announced that at least 10 prison guards and multiple inmates have sustained injuries after a large prison riot broke out at the Zarzal Correctional Insitution in Rio Grande, Puerto Rico. 

According to Fox News Latino, the riot began when prison guards discovered a cache of contraband being hidden by inmates at the prison.

The subsequent confrontation led to the prisoners attacking the guards, which escalated to a full-scale riot. 

Several individual skirmishes occured after the initial confrontation, and the situation was finally brought under control by the prison SWAT team.

Authorities did not release an exact figure on the total number of injuries sustained by inmates and guards. However, it is known that at least one prison guard received facial wounds during the riot and was transported to the Rio Piedras Medical Center for treatment and observation.