BAGHDAD, Iraq (CNN) -- Two U.S. soldiers died Saturday in separate incidents unrelated to combat, the U.S. military said in statements.
The first soldier was assigned to the Army's 3rd Sustainment Command (Expeditionary), according to the statement from the unit's public affairs office.
The second soldier, who died in southern Iraq, was assigned to Multi-National Division-Center, the military said. The incident was under investigation, according to the military statement.
The military did not release the soldiers' names, pending notification of relatives, nor the circumstances of their deaths.
The deaths bring to 4,231 the number of U.S. soldiers who have died in the Iraq War since it began in March 2003.