BEIRUT (AP) — Lebanese security officials say five prisoners, most of them members of an al-Qaida-inspired group, have escaped the country's main jail.

The officials say it is not clear how the four Lebanese and one Sudanese citizen broke out of the heavily-guarded Roumieh prison east of Beirut on Saturday.

Lebanese troops, backed by an army helicopter, set up a security cordon around the prison and searched all cars leaving the area. 

Local media say the Lebanese are members of the al-Qaida-inspired Fatah Islam group. The officials have refused to say whether the escaped convicts included Fatah Islam members.

Fatah Islam fought the Lebanese army inside a Palestinian refugee camp in northern Lebanon in the summer of 2007.