Gunmen attacked the Radisson Blu hotel in Mali's capital Bamako on Friday and are believed to have taken hostages, members of the hotel's security services said according to dpa. A group of men drove to the hotel in a car with diplomatic plates, entered the building and went up to the fourth floor, the sources said. They forced a door open and shots were heard. They were believed to have taken hostages. The army has stormed the area.