Eleven people from an Iraqi family, including women and children, were killed Sunday during a raid involving U.S. troops, Iraqi police sources said.

The U.S. military said the deaths were caused by a suicide bomber, but the Iraqi police sources said it was not clear how the family died.

A U.S. military statement said troops entered a building in the northern Iraqi city of Mosul looking for a terrorist suspect.

Troops in the building were shot at, the statement said, and returned fire.

The suspect then detonated a suicide vest, the statement said.

Those killed included three women, three children and five people whom the U.S. military referred to as terrorists, according to the statement.

Two children, one of whom was injured, were found near the building and were moved to a safe location, the coalition statement said.

Troops also found a hidden cache of weapons in the building, containing small firearms and explosives, the statement said.

"This is just another tragic example of how al Qaeda in Iraq hides behind innocent Iraqis," said Rear Adm. Patrick Driscoll, Multi-National Force-Iraq spokesman. "The terrorist exploded his suicide vest in close proximity to women and children, and in a house full of explosives and weapons."

In a separate attack in Mosul, at least four Iraqis were killed and six others wounded Sunday by gunmen who fired on a group gathering at a mourning tent, an Iraqi Interior Ministry official said.

Mourning tents are typically erected after funerals, but it was unclear if this incident occurred at a funeral.

Last month four employees of Iraqi satellite TV station Al-Sharqiya were abducted and killed in the same neighborhood.

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