Story highlights Riot ends after 14 hours, state-run media reports

It is the fifth deadly prison riot in Brazil since January 1

Rio de Janeiro, Brazil (CNN) At least 26 prisoners were killed Saturday in Brazil's fifth deadly prison riot since January 1.

The latest riot happened at the Alcaçuz prison, the largest prison in the state of Rio Grande do Norte in the northeast, according to the state government.

Police and special military police forces were deployed to the prison, government spokeswoman Juliska Azevedo said.

The riot lasted more than 14 hours, finally ending around 7:30 a.m. Sunday, the state-run news outlet Agencia Brasil said.

It broke out after a fight between rival gangs PCC (First Capital Command) and Sindicato do Crime do RN (Crime Union of Rio Grande do Norte).