Five weeks after the mass exodus of ethnic Rohingya from Myanmar began, the U.N. says the total number of arrivals in Bangladesh has now topped 500,000. Here are some photographs narrating the episode of fleeing from persecution in search of shelter. AP images by Gemunu Amarasinghe.

A newly arrived Rohingya Muslim boy from Myanmar walks towards a camp for refugees in Teknaf, Bangladesh, on Friday (September 29).

Newly arrived Rohingya Muslims from Myanmar rest at a site strewn with clothes in Teknaf, Bangladesh, Friday.

A Rohingya Muslim boy carries a bottle of water and a pair of sandals and runs past a muddy patch to a camp for refugees in Teknaf, Bangladesh.

A Rohingya Muslim from Myanmar holds a hen on his lap as he travels on a wooden boat after crossing over from Myanmar into Bangladesh in Teknaf, Bangladesh, Friday.

A Bangladeshi volunteer carries a newly arrived elderly Rohingya Muslim woman Sonabanu Chemmon and heads towards a camp for refugees in Teknaf, Bangladesh, Friday. Chemmon was among those too weak to walk.

Rohingya Muslims from Myanmar gather their belongings and walk towards camps for refugees in Teknaf, Bangladesh, Friday.

Rohingya Muslims walk towards camps for refugees after crossing the border from Myanmar into Bangladesh in Teknaf, Friday.

An elderly Rohingya Muslim woman stumbles as she walks with a group from Myanmar towards a camp for refugees in Teknaf, Bangladesh, Friday.

Bangladeshi volunteers help a newly arrived Rohingya Muslim woman Sonabanu Chemmon at Teknaf, Bangladesh, Friday.

A Rohingya Muslim Mohamed Rafiq, center, comforts his wife Noora Khatum and his children as they reach Teknaf, Bangladesh, Friday.

A Rohingya Muslim Mohamed Rafiq hands a drink of water and biscuits to his wife Noora Khatum who lies exhausted on the ground as they reach Teknaf, Bangladesh, Friday.

A Rohingya Muslims girl rests on a pile of bags, as she waits with others to walk towards a camp for refugees after crossing into Bangladesh from Myanmar, in Bangladesh, Friday.

A Rohingya Muslim man carries an elderly woman and walks towards a camp for refugees after crossing over the border from Myanmar into Bangladesh in Teknaf, Bangladesh, Friday.

Rohingya Muslims carry a sick woman in a basket as they walk towards a camp for refugees after crossing the border from Myanmar into Bangladesh in Teknaf, Bangladesh, Friday.

A Bangladeshi volunteer carries a Rohingya Muslim woman off a boat after she arrived with a group of other Rohingya at Teknaf, Bangladesh, Friday.

A Rohingya Muslim woman who just crossed the border from Myanmar into Bangladesh puts her head down and cries in Teknaf, Bangladesh, Friday.

Tears roll down the cheek of a Rohingya Muslim woman who crossed over the border from Myanmar into Bangladesh in Teknaf, Friday.

Rohingya walk towards a camp for refugees after crossing the border from Myanmar into Bangladesh, Friday.

A Rohingya man from carries an elderly woman after they crossed the border into Bangladesh from Myanmar, in Teknaf, Bangladesh, Friday.