Baghdad, Iraq ? Three U.S. soldiers and an Iraqi interpreter were killed in two attacks west and south of Baghdad, the military reported Tuesday.

A soldier from the 3rd Armored Cavalry Regiment was killed in a bombing Monday night and later two soldiers from the 82nd Airborne and an Iraqi translator were killed in a second bombing. Three soldiers were wounded in the attacks.

Three more soldiers, from the 4th Infantry Division, were slightly wounded Tuesday afternoon when their convoy was bombed in Tikrit.

In Baghdad on Tuesday, unknown assailants fired an explosive at the Iraqi Foreign Ministry building and Shiite Muslims confronted U.S. soldiers who had detained a prominent cleric in an effort to collect illegal weapons allegedly amassed at a mosque.

Also in Baghdad, former Iraqi intelligence officers demanding back pay hurled stones at coalition troops during demonstrations that came on the heels of three days of raucous protests by ex-Iraqi soldiers waiting to receive one-time stipends.

The latest deaths brought to 91 the number of U.S. troops killed by hostile fire in Iraq since President Bush declared major combat over May 1.