Akhir 04, 1432 H/March 09, 2011, SPA -- Officials said a bomb has exploded outside a Moscow building belonging to Russia's top security agency but caused no casualties, AP reported. Nikolai Sintsov, a spokesman for the National Anti-Terrorist Committee, said the explosive went off Wednesday at a bus station near the Academy of the Federal Security Service, or FSB. He said in televised remarks that the blast slightly damaged several cars parked nearby. The FSB, the main successor to the Soviet KGB, is a symbol of power under Prime Minister Vladimir Putin. The former KGB officer headed the agency before his election as president in 2000.