Further earthquakes are now feared after buildings were damaged and port docks torn up as a tremor hit the western Greek island of Kefalonia.
Frightened residents on the island made famous by 'Captain Corelli's Mandolin' ran into the streets just over a week after a quake damaged hundreds of buildings, reviving memories of a disaster in the 1950s.
Authorities said about 16 people had been slightly hurt, mainly by falling objects, while roads, homes and shops were damaged and some areas suffered power and water supply cuts in the 5.7-6.1 magnitude quake.
The armed forces were sending two military transport aircraft carrying 30 personnel and three doctors as well as tents and emergency supplies.
"The whole area has been activated . . . we are all on alert," said Maria Sahpazi, head of the Geodynamic Institute in Athens.