Five US soldiers have been killed in a shooting at a base in the Iraqi capital Baghdad, the US military says.
The incident happened at Camp Liberty near Baghdad's international airport at about 1400 (1100 GMT), the military's statement said.
The military has released no further details of the incident.
Earlier this month, a man in an Iraqi army uniform shot dead two US soldiers and injured three others at a base near the northern city of Mosul.
Iraqi military reports said he was a soldier also working as an Imam at a mosque on the base.