The US military in Iraq said Monday it has arrested a suspected propaganda expert linked to a militant group that receives training from Iran. The military said it believes the man is a member of the Hizbullah Brigades, an Iraqi group that it describes as "an offshoot of Iranian-trained special groups." That's language the US uses to describe Shi'ite fighters defying a cease-fire order. A military statement said the man uploads to the Web images and video of attacks on Iraqi and US-led forces. The information is allegedly used to raise money and other kinds of support from Iranian backers. The suspect was arrested Monday in Baghdad.