The U.S. Defense Department identified one of the soldiers Sunday as Spc. Trevor A. Wine, 22 of Orange, Calif.

A statement posted on the department's Web site said Wine died in Tikrit on Saturday, a day after his vehicle hit an improvised explosive device.

Wine was assigned to the Army's 24th Quartermaster Company based at Fort Lewis, south of Tacoma.

Authorities did not immediately release the identity of the second soldier killed.

Fort Lewis spokesman Joe Hitt said the soldier's name would be withheld until family members are notified.

The second soldier was killed Saturday morning when a rocket-propelled grenade hit the convoy he was riding in, The News Tribune of Tacoma reported Sunday.

That incident also occurred south of Qayyarah, a city along the main north-south Highway 1 about 25 miles south of Mosul, where task force headquarters are located.

Earlier this week, Spc. Jacob Herring, 21, of Kirkland, died after his Stryker squad was attacked with a hand grenade near Tall Afar, about 45 miles west of Mosul. He had been stationed at Fort Lewis.