Israeli police's manhunt after 6 prisoners break out

Israeli forces launched a massive manhunt in northern Israel on Monday and the occupied West Bank after six Palestinian prisoners escaped overnight from a high-security facility in an extremely rare breakout.

Officials said they have erected roadblocks and are conducting patrols in the area.  Israel's Army Radio also said 400 prisoners are being moved as a protective measure against any additional escape attempts. 

The radio said the prisoners escaped through a tunnel from the Gilboa prison, which is supposed to be one of Israel's most secure facilities.  The escapees were believed to have been headed for Jenin, where the internationally recognized Palestinian Authority wields little control and where militants in recent weeks have openly clashed with Israeli forces.