At least four people have been found dead on a cargo ship carrying around 900 migrants, which was found adrift in Greek waters.

The Blue Sky M had been abandoned and left on autopilot by its crew.

Italian coastguards later brought it under control and safely docked it at the Italian port of Gallipoli.

The migrants, believed to be mainly Syrians and Kurds, have been taken to a local school and gym.

35 of them were taken to hospital, with some treated for hypothermia.