At least 52 inmates died in the riots that involved criminal gangs in Para, located in the northern part of the country.
Two officers were also taken hostage as the rival gangs clashed, reported the AFP news agency on July 29.
At least 16 of the victims were decapitated, authorities said. Others were asphyxiated. President Jair Bolsonaro has described plans to “stuff prison cells with criminals" @terrence_mccoy reports from Rio de Janeirohttps://t.co/yi5EaKSENj— Matthew Hay Brown (@matthewhaybrown) July 29, 2019
The fight began at the Altamira Regional Recovery Center at around 7 a.m. local time, said a Para state official in the AFP report.
He said that two guards were taken hostage during the clashes before the gangs freed them.
According to BBC, reports in Brazil said that many inmates died of suffocation when the prison was set on fire. A video posted by Brazilian media outlets shows smoke emitting from a prison building, and another showed prisoners on rooftops.
The prison has a capacity for 200 prisoners, but it was occupied by 311 inmates, Sky News reported.
Brazil has a prison population of 704,000, but there is only cell space for about 416,000 around the country, the report noted.
In May of this year, some 55 inmates died at prisons in Amazonas state.
#Breaking: At least 50 inmates got killed in #Para prison in #Brazil, after a riot broke out as gangs fought for 5 hours, with other inmates in the prison whom of 16 inmates got decapitated. pic.twitter.com/CUvczqqkMU— Sotiri Dimpinoudis (@sotiridi) July 29, 2019
At one prison, 15 prisoners were found dead, with many being stabbed by makeshift knives and strangled, according to the report. Forty prisoners were found dead at another facility, and their reported causes of death were asphyxiation.
Two years before that, about 150 prisoners died during a several-week-long span of violence across several prisons. The violence was blamed by rival gangs.
According to Sky, the riots lasted weeks and was linked to the control of drug-trafficking networks in the area.
In May, Brazil’s justice and public security ministry said it was sending a federal task force to help local officials handle the situation.
“I just spoke with (Justice) Minister Sergio Moro, who is already sending a prison intervention team to the State of Amazonas, so that he can help us in this moment of crisis and a problem that is national: the problem of prisons,” Amazonas state Gov. Wilson Lima said.
Several drug-trafficking and other criminal gangs in Brazil run much of their day-to-day business from prisons, where they often have wide sway. The 2017 slayings were largely gang-related, prompting authorities to increase efforts to separate factions and frequently transfer prisoners.
Authorities have not yet said whether gang wars were behind the latest blood-letting.
Moro had to send a federal task force to help tame violence in Ceara state in January that local officials said was ordered by crime gang leaders angered by plans to impose tighter controls in the state’s prisons.
The Associated Press contributed to this report.