Attack kills 5 at exile camp in Iraq February 9, 2013 -- Updated 0752 GMT (1552 HKT) The attack occurred at Camp Liberty The group says the dead and wounded toll could be higher Baghdad, Iraq (CNN) -- A camp housing Iranian dissidents in Iraq was attacked Saturday morning leaving at least five dead and 40 wounded, Iraqi police said. The attack occurred at Camp Liberty, formerly a U.S. base, which is now the home of the Iranian exile group Mujahedin-e-Khalq. The dead and wounded toll from the rocket and mortar attack varied. Shahriar Kia, a spokesman for Mujahedin-e-Khalq, said the attack left six dead and 50 wounded. The residents at the camp were vulnerable both because the attack happened when most were asleep and because many lack adequate shelter, said Kia. The residents are "squeezed into a small area, without shelter," said Kia. Mujahedin-e-Khalq recently moved from Camp Ashraf in the Diyala province to Camp Liberty in Baghdad. Leaders of the dissident group had been reluctant to move to the new camp because of the conditions of it, calling it more a prison than a home. CNN's Arwa Damon, Jen Deaton and Mohammed Tawfeeq