The BBC has spoken to Rohingya Muslims who suffered crippling injuries after apparently stepping on army landmines as they fled violence in Myanmar.
One of them, a 15-year-old boy being treated in Bangladesh, lost both legs.
A woman at the same hospital said she had trodden on a landmine after she and her family were fired on. It's unclear who laid the mines in either case.
More than 300,000 Rohingya have escaped Myanmar (Burma) in recent weeks.The army there denies targeting civilians.
On Sunday the human rights group Amnesty International accused the authorities of laying landmines at border crossings used by fleeing Rohingya.
A Myanmar military source told Reuters news agency that mines had been placed along the border in the 1990s and the army had since tried to remove them, but added that none had been planted in recent days.
The hospital visited by the BBC has seen an influx of people with landmine injuries, doctors say.
The 15-year-old boy, Azizu Haque, arrived with his legs destroyed. His brother, in another hospital, suffered the same fate, his mother says.
"Their injuries are so bad it's as if they are dead," she told the BBC. "It's better that Allah [God] takes them, they are suffering so much."
The injured woman, Sabequr Nahar, says she fled Myanmar because the military had been targeting her community, and she was crossing the border with her three sons when she stepped on a landmine.
"We'd been fired on, shot at, and they planted mines," the 50-year-old said.