A mortar attack on an Iranian dissident camp killed three people in Baghdad on Saturday. The Mujahidin-e-Khalq (MEK) group said Iran was probably to blame, with Iraqi complicity.<br/> <br />MEK said two of the camp's residents were killed and 40 wounded in the attack. An Iraqi died when a stray mortar round hit a residential complex for Baghdad airport employees nearby.<br/> <br />Video posted on a social media website, which Reuters cannot independently verify, purports to show the camp under attack, with smoke rising from buildings.<br/> <br />A similar attack on the camp in February killed at least five members of the MEK, which was removed from the U.S. State Department's list of terrorist organisations last year.