The U.S. military says Iraqi authorities have foiled a suicide chemical bomb attack in the western city of Ramadi.

A statement issued Sunday says Iraqi police detained a suicide bomber Friday, before he could detonate two tons of explosives aboard his truck that was also loaded with nearly 20,000 liters of chlorine.  

U.S. officials say the truck was stopped near a police station about 150 meters from a water treatment plant in the predominantly Sunni city. 

Insurgents have carried out seven chlorine bomb attacks in Iraq this year. 

Meanwhile, Iraqi police said Sunday gunmen attacked a Sunni mosque south of Baghdad.  Officials say at least two people were wounded.   Mosques are frequent targets of attack in Iraq were sectarian violence between Sunni and Shi'ite muslims has become commonplace.

On Saturday, a series of suicide bombings in Iraq killed at least 47 people, many of them Iraqi policemen.

Some information for this report was provided by AP and Reuters.