A roadside bomb has exploded on a bridge in the southern Iraqi city of Basra, killing a civilian, while the US bombing of Falluja continues. Police Lieutenant-Colonel Karim al-Zaidi said the bomb on Wednesday targeted an Iraqi police vehicle, wounding the four occupants and killing a civilian who was driving past. British forces in the mainly Shia Basra region often use the Quzayzi bridge where the bomb went off, but there were no troops in the area at the time. **Falluja strikes*** In Falluja, American warplanes struck again overnight. Three houses were flattened in the attack in the Muatasim area, an Iraqi journalist told Aljazeera. But the families who lived there had already fled to a safer area and there were no casualties, said Dr Dhiya al-Jumaili at Falluja general hospital. The US military said in a statement a suspected safe house of Abu Musab al-Zarqawi group was targeted, southwest of Falluja. It was the latest in weeks of strikes on the city, 65km west of Baghdad, that have left scores dead and injured. More than half of Falluja's residents have fled the city due to continuous bombings. Talks between a delegation representing the city's residents and officials of the interim Iraqi government are continuing, the Iraqi journalist told Aljazeera. **Allawi's warning*** On Tuesday, interim Prime Minister Iyad Allawi reportedly sounded a warning to the fighters in Falluja and the neighbouring city of Ramadi to stop violence or face the consequences. His comments came after hospital sources said nine people including women and children were killed in two pre-dawn raids by US warplanes on suspected targets in Falluja on Monday. US forces also bombed Sadr City in Baghdad late on Tuesday. Meanwhile, three members of the Patriotic Union of Kurdistan Party were killed and two others injured on Tuesday in the Jalawla area, northeast of Baquba city when unknown assailants opened fire on them **PHOTO CAPTION*** A policeman looks at a taxi that tumbled off a bridge after a roadside bomb targeting a British military convoy went off nearby, in Basra, Iraq, Wednesday Oct. 6, 2004. (AP)