Gunmen kill 13 outside US airbase in Iraq

Gunmen in two cars attacked a minibus bringing workers to a US airbase in Iraq today and

killed 13 people, police said.

The minibus driver and nine workers from the base were killed in the attack in Baquba, just north of the capital, after the gunmen blocked the bus and opened fire.

Three other civilians died when the bus careered into their car, the Baquba police source said.

Insurgents often target civilians who work with US forces in Iraq.