Photo has been used for illustrative purposes.

A volley of rockets slammed into an Iraqi airbase north of Baghdad where US forces have been based, wounding four local troops, the Iraqi military said on Sunday.

Its statement said eight Katyusha-type rockets landed on Al Balad airbase, wounding two Iraqi officers and two airmen.

Sunday's attack wounded an Iraqi air force officer and three enlisted men, Iraqi security officials said. They spoke on condition of anonymity in line with regulations.

No group claimed responsibility for the attack.

The rockets struck Al Balad air base, which hosts American trainers, advisers and a company that provides maintenance services for F-16 aircraft. Some rockets fell on a restaurant inside the airbase, the officials said.

A statement from the Iraqi army's official media office confirmed the attack but said eight rockets hit the base, and that two officers had been wounded. The difference in accounts could no immediately be reconciled.

“There are American experts, trainers and advisers at the base,” said one defense official, who requested anonymity because he was not authorised to speak to media.

Agencies