Greek police have said a bomb has exploded near the Acropolis in central Athens - but it was not clear what the target was and whether anybody had been hurt.
The explosion followed a warning call to a Greek newspaper late today (Wednesday).
There has been no immediate claim of responsibility.
The bomb exploded outside a ship owner's house near the Acropolis in central Athens on Wednesday night, causing damage but no injuries, police said.
Police spokesman Panagiotis Papapetropoulos said officers were able before the blast to evacuate one or two people from the building and to seal off the area of the major tourist site.
The identity of the shop owner was not immediately known.
The Acropolis is an ancient citadel on a high rocky outcrop above the city and contains the ruins of several ancient buildings of great architectural and historical significance. The most famous of them is the Parthenon.
It is the leading tourist attraction in the Greek capital and attracts 13 million visitors annually.