BAGHDAD, (AP) – A bomb targeted a convoy carrying Western contractors in the southern city of Basra on Sunday, officials said. One Iraqi was wounded, but no one in the convoy was harmed.

The attack occurred around 8:30 a.m. as the contractors headed to a new children’s hospital to inspect work on the building, said Maj. Bill Young, a spokesman for the British military in Iraq.

He said there were three civilian cars with workers from a Western construction company. No members of the British military were present.

Young said no one in the convoy was injured, but that such attacks were hindering reconstruction efforts.

An Iraqi police official in Basra said one Iraqi civilian was wounded. He spoke on condition of anonymity because he was not authorized to speak to the media.

Also Sunday, the U.S. military raised the number of people injured in a helicopter crash in Baghdad from four to five. It said three were Americans.

Two U.S. helicopters collided while landing at a base in Baghdad late Saturday. One Iraqi soldier was killed.

The U.S. military said it was investigating, but that hostile fire did not appear to be the cause.