Berlin police say Greece's consulate in the capital has been attacked with paint bombs and cobble stones.
Police said Friday that, according to witnesses, about a dozen masked vandals attacked the building during the night but caused only minor damage.
German Foreign Minister Guido Westerwelle sharply condemned the "appalling" attack. Westerwelle says he called his Greek counterpart to express his personal regret.
Greece last year received a euro110 billion ($155 billion) bailout from its European partners and the International Monetary Fund. Athens appears likely to need another lifeline soon.
The reasons for the attack were unclear.