A homemade bomb exploded outside a Greek government taxation office in Athens on Friday, damaging nearby buildings but causing no injuries, police said, according to Reuters. "The explosive device went off around 0230 GMT, shattering glass at nearby buildings. There was a warning call to police a few minutes earlier but no claim of responsibility," a police official said on condition of anonymity. Greece's anti-terrorist squad investigating the blast found pieces of a table clock and believes the explosive material used was common dynamite but more will be known after lab tests, the police official said.