A synagogue on the Ionian island of Corfu was damaged in an arson attack early on Tuesday.
According to police, one or two men forced open the wooden door of the building, located in the main town?s old Jewish quarter, and started the fire, which damaged about 30 books.
A policeman was guarding the synagogue but he told officers that he did not notice the attackers.
Valuable parchments believed to be more than 400 years old were not damaged in the fire.
Last year, a synagogue in Hania, Crete, was attacked twice, leading to the arrest of three men.