A fifteen-year-old boy has been killed and his mother and sister injured in a bomb explosion in central Athens.
The woman, who was slightly injured and the girl, whose injuries were more serious, were both taken to hospital.
Police said the victims were Afghan immigrants. The device which went off outside an association for business management also damaged nearby cars.
Bomb attacks by militant leftist groups are frequent in Greece, but usually target police and public buildings.
Last night’s explosion was the first in years to kill someone. An official said there had been no warning.
Urban violence increased in the country after the police shooting of a teenager in December 2008.
A self-proclaimed guerilla group, “Fire Conspiracy Cells” has said they were behind three small-scale bomb attacks against police and a far-right group last week.