Officials say a roadside bomb has killed at least seven people in a Baghdad suburb while the bodies of three construction workers were found elsewhere in the Iraqi capital. A police officer says the Wednesday morning blast struck at a busy street in the southeastern suburb of Nahrawan. He says it killed seven people and wounded 15, according to a report of the Associated Press. Another officer says the bodies of three workers were found inside a house under construction in southeastern Zafaraniyah neighborhood on Wednesday. The three were shot in the head at close range.