Nearly 900 migrants saved by Italian navy

Italian navy rescued 896 migrants crossing the Mediterranean by boat on Thursday night, after the government warned of an "emergency" caused by a surge in new arrivals.

Three navy warships and two coast guard patrol boats took on the migrants in the Mediterranean and they were then transferred to other vessels and taken to ports in Sicily, the navy said in a statement.

In Geneva, the UN refugee agency UNHCR estimated 6,000 people had been rescued by the Italian navy from over 40 overcrowded boats in the past four days.

UNHCR spokeswoman Melissa Fleming said the migrants had set off from northern Libya "and many were fleeing violence, conflict and persecution".

"Main countries of origin include Syria, Eritrea, Somalia, Nigeria, Gambia, Mali and Senegal," she said.

Syrians made up the highest number landing in Italy in 2013 with over 11,300 arrivals reported.

The anti-immigration Northern League, a small but vociferous opposition party, has called for migrants to be sent back and, along with a series of far-right parties, accuses the government of failing to act.