A remote-controlled bomb hit a vehicle in a troop convoy in the southern Somali port city of Kismayu, killing at least three soldiers, Reuters cited police and residents as saying on Sunday. Militant group al Shabaab claimed responsibility for the attack, which hit the convoy as it drove through Gulwade village in Kismayu late on Saturday. "The bomb was targeted at our convoy. Three soldiers were killed," said Ismail Hussein, a police officer in the city.