Explosive device at shopping mall near Athens injures two ATHENS (Reuters) - An explosive device went off on Sunday at a shopping centre near Athens causing damage and lightly injuring two security employees, police said. The device was placed in a garbage bin near a branch of National Bank. There were two warning calls to a newspaper about half an hour before the explosion but police thought it was a hoax," a police official who declined to be named told Reuters. Reporting by George Georgiopoulos; Editing by Alison Williams