Athens:
Small mail bombs have exploded outside the Russian and Swiss embassies in Athens and police have destroyed at least three more as they tried to halt a wave of attacks on foreign missions blamed on far-left domestic extremists.
Authorities closed down sections of the capital and checked dozens of potential targets on Tuesday, while all embassies were given additional police security.
No group claimed responsibility for the attacks, which caused no injuries. No warning was given. No link has been made with the recently discovered Yemen-based mail bomb plot, which used much more powerful devices.
The attacks began Monday when a mail bomb addressed to the Mexican embassy exploded at a delivery service in central Athens, lightly wounding one worker.