Four Pakistani teenagers have been arrested for allegedly gang-raping a 16-year-old boy in a Greek migrant camp and recording it on their mobile phones.

The 16 and 17-year-olds were detained at the Moira camp on the island of Lesbos on Sunday and now face felony rape and child pornography charges.

The four are accused of collectively assaulting a fellow 16-year-old, also from Pakistan, and recording their actions on mobile phones.

Four Pakistani teenagers have been arrested for allegedly gang-raping a 16-year-old boy at the Moira migrant camp in Lesbos, pictured

The victim was seen by a medical examiner and a child psychologist, while the four arrested boys are to appear before an investigative judge.

A police source said: 'The four minors, aged 16 to 17, will appear before a prosecutor today.'

Greece is accommodating over 60,000 refugees and migrants stuck in the country after a succession of Balkan and EU states shut their borders earlier this year.

Many of the camps are grossly overpopulated, and rights groups have repeatedly warned that minors must be housed separately for their safety.

There are also regular fights amongst refugees and migrants, who are forced to wait months for their asylum applications to be processed.

Some 5,000 people had to be evacuated from the Moria camp last week when a fire broke out after another brawl. Greece is in the process of building additional camps on the mainland with EU funds.

Greece is accommodating over 60,000 refugees and migrants stuck in the country after a succession of Balkan and EU states shut their borders earlier this year

Several migrants sleep on the ground around the port of Mytilene on the Greek island of Lesbos

But Athens says it has still not received the required EU staff promised by fellow member states to process a massive wave of asylum applications.

This would have enabled Greek authorities to relocate approved refugees out of the congested island camps.

Greece has also bemoaned the failure of fellow member states to accept thousands of refugees from its camps, despite a highly-publicised EU scheme launched last year.

Greek junior foreign minister for European affairs, Nikos Xydakis told Die Welt newspaper: 'Fires and incidents in certain island camps are, in a fashion, the result of the failure to share out refugees to all EU member states.'

Greece has also bemoaned the failure of fellow member states to accept thousands of refugees from its camps, despite a highly-publicised EU scheme

Mr Xydakis added some 7,000 refugees could immediately leave but 'most EU states either accept very few or do not even respond to our requests.'

The Greek official also addressed a warning by German interior minister Thomas de Maiziere earlier this month to send migrants back to Greece, ending a five-year suspension of the EU's Dublin rules, under which refugees must seek asylum in the first EU country they enter.