Forty-two prisoners were killed in three different prisons in the Brazilian state of Amazonas on Monday.
All 42 prisoners were found dead in the city of Manaus and showed signs of asphyxia, according to the Amazonas state prison agency.
According to Brazilian outlet Exame, the deaths occurred by hanging up and were reported to the Antônio Trindade Criminal Institute (Ipat), the Puraquequara Prison Unit (UPP) and the Provisional Detention Center (CDPM I), all based in Manaus.
The astonishing death toll follows only one day after 15 others died during battles between prisoners in a fourth prison in the same city.
The series of murders reflects a similar disaster in 2017 when more than 120 prisoners died by other prisoners during battles between rival gangs in prisons in the northern states. In those brutal murders, many of those victims had their heads cut off or their hearts and intestines pulled out.
Family members of prisoners react in front of a prison complex in the Brazilian state of Amazonas after prisoners were strangled in four different prisons on Monday according to the penitentiary department in Manaus.
A woman hangs her head and cries outside the Anisio Jobim Prison Complex on Monday
Broken and injured family members demanded answers outside the three prisons
Relatives broke into tears when they heard that their loved ones were strangled
A relative of a prisoner responds in front of a prison complex in the Brazilian state of Amazonas following the news of 42 detainees reported on Monday
Little information has been released about the murders series on Monday. The cause of the massacre was not revealed
The murders have led broken heart families to swarm, jail and beg the prisons for answers to the cause of the death of their loved ones.
Little information has been released about the murders series on Monday.
According to the State Department of Pnt Administration (Seap), the main guideline in investigating is fractional disputes in the states, according to Exame.
The Amazonas state agency said early Monday that several prisoners were found dead by hanging in their cells.
The Brazilian Ministry of Justice and Public Security said it sent a federal working group to help local officials deal with the situation.
& # 39; I just spoke with (judge) 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, & # 39 ; Amazonas State Governor Wilson Lima said.
The prison office said the situation was & # 39; under control & # 39; and that prisoners were under lockdowns.
On Sunday, 15 prisoners were killed during a riot at the Anisio Jobim Prison Complex in Manaus, where 56 prisoners died in violence two years earlier.
Murders took place in the Antioio Trindade Criminal Institute, the Puraquequara Prison Unit (above) and the Provisional Detention Center
On Sunday 15 prisoners were murdered in the Penitentiary Anísio Jobim (above)
The news of the 15 deaths of prisoners led to protests outside prison, with concerned family members asking for their loved ones on Sunday
Relatives of detainees dismantle a barricade after a brief protest to ask for more information about their loved ones, outside the Anisio Jobim Prison Complex in Manaus on Monday
Sunday's skirmishes broke out during the opening hours of the morning, with some detainees being stabbed with sharp toothbrushes, while others were strangled.
Secretary-General Marcus Vinicius de Almeida said an investigation has been launched to determine the cause of the Sunday fight.
& # 39; Some died in the cell with the bars closed, & # 39; said Almeida.
& # 39; Some deaths were caused by suffocation and others by perforations with the use of … (sharpened) toothbrush. & # 39;
Local authorities said prisoners were fighting against each other before Sunday afternoon, and security reinforcements were brought in and managed to regain control within 45 minutes.
A woman asks police officers on Monday for more information outside the Anisio Jobim Prison Complex in Manaus, Amazonas State, Brazil
Brazilian riot police are preparing for invasion of the Puraquequara Prison facility after hordes of people received demanding answers on Monday
A prisoner's mother is crying on Monday outside the Anisio Jobim Prison Complex in Manaus
Although the authorities did not say whether there were gang wars behind the latest bloodshed, various drug trafficking and other criminal gangs in Brazil run many of their daily activities out of prisons, where they often have great influence.
The killings in 2017 were largely gang-related, prompting authorities to make more efforts to separate groups and often transfer prisoners.
Moro had to send a federal working group to help tame the violence in the state of Ceara in January that local officials said they had been ordered by crime gang leaders angry with plans to impose stricter controls in state prisons.
Prisons in Brazil are seriously overcrowded and dangerous.
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