In June a vessel carrying hundreds of migrants sank 50 miles off the Greek coast.

It is thought as many as 600 people drowned as the over-crowded ship sank in the deepest part of the Mediterranean Sea.

However questions have been raised about the involvement of the Greek Coast Guard about their involvement in the tragedy.

As part of a Radio 4 documentary, BBC Europe correspondent Nick Beake has been trying to find out more about those who managed to escape death on the fatal voyage.

Today’s Katya Adler spoke to Nick Beake and to Gillian Triggs, Assistant High Commissioner with the UN refugee agency the UNHCR.

(Image, Migrants on board ship, Credit, Hellenic Coast Guard/ Reuters)