Elsewhere, a car bomb exploded in east Baghdad, killing at least one person and wounding five.
In the southern city of Basra, a British soldier was killed and four were wounded today in a roadside bomb explosion.
Also today, the U.S. military announced the arrival of about 3,200 new troops in Baghdad as part of the new security plan announced by U.S. President George W. Bush to stabilize the situation in the capital.
The announcement comes a day after 24 U.S. soldiers were reported killed in Iraq in one of the deadliest days for American forces since the war began.
In the worst single incident, the U.S. military said 13 service people died on January 20 when a helicopter crashed northeast of Baghdad.
It was not immediately clear how the Black Hawk helicopter was brought down.
(compiled from agency reports)