At least 42 inmates have been found dead at four prisons in the capital of Brazil's northern Amazonas state on Monday.
Authorities said the victims appeared to have been killed by "asphyxiation" and were discovered during routine inspections at the prison facilities.
Additional reinforcements have been dispatched to boost security, they added, without providing more details.
This comes a day after 15 prisoners were killed in gang clashes in the same city.
US Senate passes Trump's tax-cut, spending bill; sends to House
The Republican-controlled US Senate passed President Donald Trump's tax and spending bill on Tuesday, signing off on a massive package that would enshrine many of his top domestic priorities into law while adding $3.3 trillion to the national debt.
France shuts schools as heatwave grips Europe
More than a thousand schools were closed in France on Tuesday and the top floor of the Eiffel Tower was shut to tourists as a severe heatwave continued to grip Europe, triggering health alerts across the region.
Blow for Thailand's government as court suspends PM from duty
Thailand's Constitutional Court on Tuesday suspended Prime Minister Paetongtarn Shinawatra from duty pending a case seeking her dismissal, in a major setback for a government under fire on multiple fronts and fighting for its survival.
Trump signs order lifting sanctions on Syria, White House says
President Donald Trump has signed an executive order terminating a US sanctions programme on Syria, allowing an end to the country's isolation from the international financial system and building on Washington's pledge to help it rebuild after a devastating civil war.
Suspect in murders of four Idaho college students to plead guilty
Former criminology graduate student Bryan Kohberger has agreed to plead guilty to killing four Idaho college students in 2022, a move that would spare him the death penalty under a deal with prosecutors, according to the family of one of the victims.
6:00am - 10:00am
Kris, Priti and Rossi host the UAE's biggest radio show. It's full of fun, laughs and it's Where The Stars Live.
The legendary Craig David joins The Kris Fade Show for an unforgettable chat!
Every weekend Kris Fade plays the biggest tracks in the Middle East. Check out this weeks chart...
One of the most talked about comedians in the world takes over The Kris Fade Show. Watch the full interview here...
It arrived: The UAE's First Mega Music Festival at Expo City Dubai!
