There were no immediate reports of casualties, according to mayors and administrators of districts at and around the epicenter of the tremor, speaking on broadcaster NTV.
Turkey’s Kandilli Observatory said the earthquake, which struck at 9:34 a.m.(0634 GMT), was 5 km (3 miles) deep and followed by four aftershocks between 4.2 and 3.4 magnitudes.
The United States Geological Survey said it was 5.7 magnitude while the European monitoring service measured it at 6.4 magnitudes.
Administrators from the districts of Ucari and Yenikoy, the epicenter of the quake, said on NTV some 20 buildings and houses were damaged. Officials were still assessing the damage.
(Production: Omer Bereberoglu)