A small bomb has exploded outside the local offices of a Greek extreme right-wing party in Piraeus, the port of Athens, causing no injury and minor damage.

It was the second attack of its kind in two days targeting the Golden Dawn party, which rose from the margins of Greek politics to enter Parliament last year.

Police said the device detonated around 9 p.m. local time (1900GMT) Wednesday, damaging the door of the unoccupied seventh-floor office.

Nobody claimed responsibility for the attack.

More: Small Bomb Targets Greek Far-Right Party Office