Thousands upon thousands of Rohingya Muslims – many of them children – continue to flee across the border from Myanmar into Bangladesh, trudging through thick mud in heavy monsoon rain.

Rohingya Muslims Myanmar Bangladesh
Rohingya refugees walk on the muddy path after crossing the Bangladesh-Myanmar borderMohammad Ponir Hossain/Reuters

Nearly 90,000 Rohingya have fled to Bangladesh since violence erupted in Myanmar's northwestern Rakhine state in August, following coordinated attacks by Rohingya insurgents on dozens of police posts and an army base. In response, the military unleashed what it called "clearance operations" to root out the insurgents.

Aid workers said that large numbers of refugees required immediate medical attention as they were suffering from respiratory diseases, infection and malnutrition. The existing medical facilities in the border area are insufficient to cope up with the influx and more aid and paramedics are needed.

Among new arrivals, about 16,000 are school-age children and more than 5,000 are under the age of five who need vaccines, aid workers said. The number of unaccompanied children is high and many were "traumatised and hungry", they said.

Rohingya Muslims Myanmar Bangladesh
A Rohingya refugee walks on the muddy path after crossing the Bangladesh-Myanmar border in TeknafMohammad Ponir Hossain/Reuters
Rohingya Muslims Myanmar Bangladesh
Rohingya refugees sit as they are temporarily held by the Border Guard Bangladesh (BGB) in an open area after crossing the borderMohammad Ponir Hossain/Reuters
Rohingya Muslims Myanmar Bangladesh
Rohingya refugees are temporarily held by the Border Guard Bangladesh (BGB) in an open area after crossing the border, in TeknafMohammad Ponir Hossain/Reuters
Rohingya Muslims Myanmar Bangladesh
Rohingya refugee boys carry their belongings after crossing the Bangladesh-Myanmar borderMohammad Ponir Hossain/Reuters
Rohingya Muslims Myanmar Bangladesh
Rohingya refugees sit inside a makeshift tent near Gundum in Cox's Bazar, BangladeshMohammad Ponir Hossain/Reuters
Rohingya Muslims Myanmar Bangladesh
A group of Rohingya refugees walk on the muddy road after travelling over the Bangladesh-Myanmar borderMohammad Ponir Hossain/Reuters
Rohingya Muslims Myanmar Bangladesh
A Rohingya boy carries a child after after crossing the Bangladesh-Myanmar borderMohammad Ponir Hossain/Reuters

Refugees reaching Bangladesh have described bombs exploding near their homes and Rohingya being burned alive. From an area close to the Bangladeshi border town of Teknaf, soaring flames and smoke could be seen rising from Myanmar across the border.

Rohingya Muslim Buddhist Myanmar Bangladesh
Smoke rises from what is believed to be a burning village in the southern Maungdaw area of Myanmar's Rakhine stateAFP
Rohingya Muslims Myanmar Bangladesh
Plumes of smoke billow from what are thought to be several burning villages in Rakhine state, MyanmarAFP

Both Myanmar's security officials and Rohingya insurgents are accusing each other of atrocities. The military has said nearly 400 people, most of them insurgents, have died in clashes. Bangladesh police, meanwhile, say dozens of Rohingya have died attempting to cross the river separating the country from Myanmar. The Myanmar government blames the insurgents for burning their own homes and killing Buddhists in Rakhine.

The army said Rohingya insurgents had set fire to monasteries, images of Buddha as well as schools and houses in the north of Rakhine state.

It posted images of destroyed Buddha statues. In addition to tens of thousands of Rohingya, more than 11,700 "ethnic residents" had been evacuated from northern Rakhine state, the Myanmar government has said, referring to non-Muslims. Myanmar state media has carried stories showing authorities providing food and medical care to the evacuees.

Rohingya Muslim Buddhist Myanmar Bangladesh
A Buddhist statue, allegedly decapitated by a Rohingya militant group, is seen in the southern Maungdaw area of Myanmar's Rakhine stateAFP
Rohingya Muslim Buddhist Myanmar Bangladesh
A smashed Buddhist statue is seen in the southern Maungdaw area of Myanmar's Rakhine stateAFP

Bangladesh officials have said at least 53 bodies have either washed up on Bangladeshi shores or have been found in the Naf River, which separates the two countries, many with bullet or knife wounds.

IBTPOTY2017 Pictures of the week
1 September 2017: Bangladeshi onlookers look at bodies washed up on the banks of the Naf river in Tenkaf. The United Nations has said the number of Rohingya Muslims to flee violence in Myanmar in recent days has topped 27,000. A further 20,000 Rohingya have massed along the Bangladeshi border, but are barred from entry as they run from burning villages and 'security' operations by Myanmar's armySuzauddin Rubel/AFP
Rohingya Muslims Myanmar Bangladesh
A Bangladeshi man touches the body of a child, one of a number of people who drowned after their boat capsized on the Naf river estuary near TeknafJashim Mahmud/AFP

The number of those crossing the border into Bangladesh surpasses the number who escaped Myanmar after a series of much smaller insurgent attacks in October that set off a military operation beset by accusations of serious human rights abuses. The newest estimate, based on calculations by UN workers in the Bangladeshi border district of Cox's Bazar, takes to nearly 150,000 the total number of Rohingya who have sought refuge in Bangladesh since October.

An unofficial camp for Rohingya refugees that sprang up after the October attacks is being dramatically expanded. Md Ali Hossen, deputy commissioner for the Cox's Bazar district, told Reuters that some new arrivals were setting up new camps and the government was not stopping them or taking the camps down on humanitarian grounds.

Rohingya Muslims Myanmar Bangladesh
Rohingya refugees carry a man after travelling over the Bangladesh-Myanmar borderMohammad Ponir Hossain/Reuters
Rohingya Muslims Myanmar Bangladesh
Rohingya refugees cross a canal after travelling over the Bangladesh-Myanmar borderMohammad Ponir Hossain/Reuters
Rohingya Muslims Myanmar Bangladesh
Children fall in the deep mud as a Rohingya refugees cross the Bangladesh-Myanmar borderMohammad Ponir Hossain/Reuters
Rohingya Muslims Myanmar Bangladesh
Rohingya refugees walk in deep water after crossing the Bangladesh-Myanmar borderMohammad Ponir Hossain/Reuters
Rohingya Muslims Myanmar Bangladesh
An 80-year-old Rohingya woman stands at Kutupalong refugee camp in Ukhiya, BangladeshJasmin Rumi/AFP
IBTPOTY2017 Pictures of the week
31 August 2017: Rohingya refugees stand in heavy rain, as they are held by Border Guard Bangladesh after illegally crossing the border from MyanmarMohammad Ponir Hossain/Reuters

Malala Yousafzai, the youngest winner of the Nobel Peace Prize, called on her fellow laureate Aung San Suu Kyi to condemn the "shameful" treatment of the Rohingya Muslims in Myanmar, saying "the world is waiting" for her to speak out. "Over the last several years, I have repeatedly condemned this tragic and shameful treatment," Malala said in a statement on Twitter. "I am still waiting for my fellow Nobel Laureate Aung San Suu Kyi to do the same. "The world is waiting and the Rohingya Muslims are waiting."

Pakistan, which has a large number of Rohingya living there, on Sunday urged "authorities in Myanmar to investigate reports of massacre, hold those involved accountable and take necessary measures to protect the rights of Rohingya Muslims".

Activists from Indonesia, home to the world's biggest Muslim population, have called on the Nobel committee to withdraw Suu Kyi's peace prize during protests outside the Myanmar embassy in Jakarta, state news agency Antara reported.

Turkish President Tayyip Erdogan, who said that violence against Myanmar's Muslims amounted to genocide, last week called Bangladesh's President Abdul Hamid to offer help in sheltering the Rohingya.

The UN says the Rohingya are one of the most persecuted groups in the world. Neither Bangladesh nor Myanmar recognises them as citizens. In Myanmar, even the name Rohingya is taboo. Officials refer to the group as "Bengalis" and insist they are illegal immigrants from Bangladesh, even though most have lived in the country for generations.