Police backed by gangs of youths have ransacked at least 10 houses belonging to ministers and other allies of the internationally recognised president of Ivory Coast, according to witnesses. The raids came amid worsening tensions between Alassane Ouattara and the sitting president, Laurent Gbagbo, whose refusal to step down has pushed the west African country to the brink of civil war. Fighters loyal to Ouattara said they captured the western town of Toulepleu, but Gbagbo's military said fighting continued.