Bomb kills 3, wounds 14 in Baghdad: sources BAGHDAD (Reuters) - A bomb in a bus killed three people and wounded 14 in Baghdad, hospital and police sources said on Tuesday, the latest attack to raise fears of a return to sectarian violence in Iraq. The explosion occurred in Sadr City, a Shi'ite district in northeastern Baghdad, the sources said. International mediator Kofi Annan is in a separate, heavily fortified part of the capital for talks with Iraqi Prime Minister Nuri al-Maliki on Syria. Sunni insurgents often attack Shi'ite targets to try to reignite sectarian violence that has killed tens of thousands. Reporting by Kareem Raheem; Writing by Sylvia Westall; Editing by Louise Ireland