KANDAHAR, Afghanistan (AP) - A police truck packed with officers and detainees struck a roadside bomb in southern Afghanistan's largest city, killing 10 of those aboard, officials said Sunday. It was the fourth deadly bombing on a day that left at least 24 people dead across the country. The Kandahar city police had driven out into a residential neighborhood of the city late Saturday to inspect a bomb that had been found there, said Javid Faisal, a spokesman for the provincial government. They detained three suspects and were driving back with them in a police pickup truck when the vehicle struck another explosive buried in the road. Eight police officers and two detainees were killed in the blast. Earlier Saturday, 10 policemen were killed when a suicide bomber on a motorcycle blew himself up in Kunduz province in the north. Meanwhile, a remote-controlled bomb planted on a bicycle exploded in the eastern city of Ghazni, killing one police officer and a civilian. And officials in Farah province in the west said Sunday that two police officers were killed there Saturday evening when their vehicle hit a roadside bomb. Attacks by insurgents are a daily occurrence around Afghanistan and the Afghan police with their unarmored pickup trucks and remote checkpoints are a common target.