“Most of the people coming in are completely exhausted, some of them say they haven’t eaten in days and some are completely traumatised by their experiences,” she said.
“One woman arrived on her own after following a band of refugees across the border. When she met with the UN, she said her husband had been shot and her 18-month-old baby had been left with her in-laws.
“She has since lost contact with her family and is struggling to process what is happening,” Tan added.
In recent days, tens of thousands of Rohingya have crossed into Bangladesh to escape mass killings they say are being perpetrated by Myanmar forces.
Foreign governments and organisations fear Rohingya villages are being subject to collective punishment after an armed group on August 25 attacked police posts and an army base in the western region of Rakhine.
Myanmar officials blame the group Arakan Rohingya Salvation Army (ARSA) for the violence, but fleeing Rohingya civilians say a campaign of arson and killings by the Myanmar army is aimed at forcing them out of the country.
“We fled to Bangladesh to save our lives,” said a man who paid a smuggler hundreds of dollars to flee the fighting.
“The military and extremist Rakhine [ARSA] are burning us, killing us, setting our village on fire,” he told the AP news agency.
He said he paid 12,000 Bangladeshi taka, or about $150, for each of his family members to be smuggled on a wooden boat to Bangladesh after soldiers killed 110 Rohingya in their village of Kunnapara, near the coastal town of Maungdaw.