Germany police have said they had found “indications” of a source of radioactivity in a flat in Hamburg used by Dmitry Kovtun, a contact of the poisoned former Russian spy Alexander Litvinenko. Police discovered “indications leading us to believe that there has been a source of radioactivity” in the flat, a police spokesman said. He said Saturday there “no danger” to other residents of the building. Police began searching the flat on Friday for traces of the radioactive substance polonium 210. Full Story