At least 68 prisoners were killed and more than two dozen injured in overnight violence at Ecuador's Penitenciaria del Litoral prison, the government said, in what officials characterise as fights among rival gangs.
The penitentiary, located in the southern city of Guayaquil, is the same prison where 119 inmates were killed in late September in the country's worst incident of prison violence in recent history.
The government has blamed disputes between drug trafficking gangs for control of prisons for the violence.
Dozens were gathered outside the prison on Saturday afternoon waiting for news of loved ones, who many said they had not heard from since Friday afternoon.
Ecuador's prison system has come under harsh spotlight in recent years for overcrowding and poor sanitary and living conditions for inmates.
President Guillermo Lasso in September declared a 60-day state of emergency in the prison system, which freed up government funding and allowed for military assistance in control of the prisons.
On Saturday, the president called on the constitutional court to allow the military to enter prisons, instead of providing only outside security. The court responded in a statement that a solution to the prison crisis will require more than temporary emergency measures.
Further disturbances in the penitentiary in the afternoon were under control by Saturday night, the government said, adding it was meeting with rights groups and the United Nations to handle the situation.
WAVE OF DISTURBANCES
The latest disturbance was set off by a power vacuum following a gang leader's release, governor of Guayas province Pablo Arosemena said in a press conference earlier in the day.
"The context of this situation is that there was no leader of the gang that has this cell block because a few days ago that prisoner was released," Arosemena said.
"Other cell blocks with other groups wanted to control them, get inside and have a total massacre."
Videos on social media purportedly posted by detainees overnight showed them begging for help to stop the violence as shots and explosions sounded in the background.
Reuters could not independently verify the origin of the videos.
There has been a wave of disturbances in the South American country's prisons, which house some 39,000 detainees, since the December 2020 killing of 'Rasquina,' the leader of the Los Choneros gang, months after he was released from prison.
His death, officials said at the time, prompted less well-known gangs to compete for influence over the country's prisons.
Gang rivalries are connected to competition for drug trafficking alliances with international cartels, ex-officials said.
Officials said a February incident that killed 79 detainees was a response to Rasquina's death. Another 22 people died in a July riot.
Prisoners in at least two other prisons in Azuay and Cotopaxi provinces were refusing food in a hunger strike on Saturday in solidarity with inmates at Litoral, the SNAI prison authority said on Twitter.