A 5.3 magnitude earthquake struck 23 kilometres northwest of Athens shortly after 2.14pm local time, followed at 3.20pm by a second tremor that measured 4.2-4.4 magnitude according to experts of the University of Athens. Seismologists say the earthquake was 13 km from the earth’s surface which is why it was felt strongly.

Earthquake specialist Gerasimos Chouliaras, referring to the multiple earthquakes still rocking the capital, could not rule out that the seismic activity is a prelude to a larger quake to follow.

People are leaving the city’s buildings and gathering at squares, and there are scenes similar to those experienced during the large quake of 7 September, 1999.

Efthymios Lekkas, head of Greece’s anti-quake protection agency, told Greeks to remain calm. “There is no reason for concern. The capital’s buildings are built to withstand a much stronger earthquake,” he said.

The initial quake lasted for around 15 seconds and was strong enough to cause people to run into the streets, and the tremor could also be felt inside Athens International Airport by holiday makers visiting Greece.

One pregnant tourist was slightly injured in Athens while sightseeing. And people and tourists gathered at Syntagma Square.

Greek daily newspaper Ethnos reports that at least one building has collapsed on Ermou Street. There were no casualties as the building was abandoned, however it did damage a vehicle parked in front.

The fire department was called to help 15 people thought to be stuck in a lift.

A mother in Liosia was feeding her small children when the TV cupboard fell, shattering the TV set.

There have been no immediate reports of serious injuries or major damage, however local media reported that there were power cuts in central Athens as well as problems to telecommunications.

Did you feel the earthquake? Email mary@neoskosmos.com.au

More to come. Developing story.