In the past 24 hours, nearly 12 inches of rain fell on the camps hosting more than 800,000 Rohingya.
The devastating blaze in southern Bangladesh left thousands of refugees homeless, officials said.
Over 1 million displaced Rohingya and the Bangladeshi community hosting them are vulnerable, and humanitarian groups helping the refugees face increasing restrictions.
Wa Lone, 33, and Kyaw Soe Oo, 29, had been jailed since 2017. They had reported on the brutal crackdown on the minority group.
The news outlet called it "a police setup to silence their truthful reporting."
The journalists were investigating the killing of Rohingya villagers by security forces at the time of their arrest last December.
The two reporters had been investigating a massacre of Rohingya villagers when they were arrested last year.
It's the first time the United Nations has explicitly called for Myanmar officials to face genocide charges.
The team compiled accounts of crimes including gang rape, the torching of hundreds of villages, enslavement and killings of children.
But they don't yet have the public support of the president -- and Mitch McConnell is delaying a vote on proposed sanctions for perpetrators of the crisis.