The U.S. military says it has uncovered a large stockpile of weapons inside a Fallujah mosque led by a key insurgent leader.

The military did not specify the number of weapons found, but called it the "largest weapons cache to date in the city" - a one-time rebel bastion.

U.S. and Iraqi government forces are continuing to sweep Fallujah after an assault on the city earlier this month.

In southern Iraqi city of Basra, police said they arrested five Arab foreigners suspected of planning attacks.

A senior police official said the two Saudi nationals, two Tunisians and one Libyan, who were arrested late Wednesday, had escaped from Fallujah four days ago.

Some information for this report provided by AP, AFP and Reuters.