Updated

Two U.S. soldiers were killed in separate attacks on convoys, the military said Wednesday, including one on the outskirts of the northern city of Mosul (search), where the sons of Saddam Hussein were killed in a firefight the day before.

Spc. Brian Sharkey said the attack near Mosul happened as a military convoy was traveling near the town. He said one of the vehicles was destroyed by a roadside bomb.

An Associated Press reporter in Mosul, 260 miles north of Baghdad (search), heard a large boom shortly before noon (5 a.m. EDT).

Six soldiers were wounded in the attack, but the name of their unit wasn't immediately available.

Another convoy was attacked in Ramadi (search), 60 miles west of the capital, Baghdad, killing one soldier and wounding two more.

Witnesses told Associated Press Television News the attack happened at 10:30 p.m. (3:30 p.m. EDT) Tuesday and several Iraqi bystanders were injured.

The nature of the attack was unclear.

The attacks brought to 155 the number of American soldiers killed in action since the beginning of the war in Iraq, eight more than died in the 1991 Gulf War.

Uday (search) and Qusay (search) Hussein were killed Tuesday in a fierce gun battle with U.S. forces in a villa in Mosul.