Turkish authorities say two earthquakes have shaken the country's third largest city, Izmir.

They say the earthquakes, measuring 5.7 and 5.9 on the Richter scale, were centered beneath the Aegean Sea near the Turkish coast. Several other Turkish cities and Greek islands were rattled by the quakes.

At least 30 people were injured. No severe building damage was reported, but several house chimneys collapsed, and cracks opened in building walls.

Turkey lies on several geological fault lines and is often hit by earthquakes. A major quake in 1999 killed more than 17,000 people in the northwestern part of the country.

Some information for this report provided by AP and AFP.