US forces kill two Iraqi civilians after bomb attack

US forces shot dead two Iraqi civilians south of Baghdad on Saturday following a bomb attack on their convoy, Iraq security officials said, while the US military denied its soldiers opened fire.According to an Iraq interior ministry official a roadside bomb hit a US convoy in Yusifiyah on the road to Hilla. American forces opened fire randomly, killing two civilians and wounding five.A police lieutenant in Yusifiyah, 25 kilometres (15 miles) south of Baghdad, confirmed the incident but put the toll at two dead and three wounded, one of them seriously.Both spoke on condition of anonymity.However, Colonel Barry Johnson, a spokesman for United States Forces in Iraq, said that US troops did not open fire, and that no injuries were reported.We have an operational report of an incident in that general area resulting from an IED (roadside bomb) attack against a convoy, (but) no shots were fired in response to the attack against our forces and there are no reported injuries, Johnson said.