Three US soldiers killed in grenade attack

Three US soldiers guarding a children's hospital in Iraq have been killed and four were wounded in a grenade attack.

The deaths of the soldiers from the 4th Infantry Division in Baqouba have brought to 161 the number of troops killed in Iraq since the start of the war, 14 more than were killed in the 1991 Gulf War.

The killings have marred what had been a quiet day in Iraq, as residents debated the authenticity of video images of Uday and Qusay Hussein released on Friday.

There had been a number of explosions and bursts of gunfire in the city throughout the day, but no reports of soldiers injured or killed.

The guerrilla-war style attacks on American forces have been averaging 12 a day.