A magnitude 3 earthquake struck about 12 km southeast of Sliven at 12:47 pm on Sunday, 11 October, according to an automatic analysis of seismic records. There are no reports of injuries or damage.

The epicentre is at 42.59° north and 26.39° east, and the quake's source lies about 8 km deep. The nearest city is Yambol, 15 km away, followed by Stara Zagora at 65 km and Burgas at 88 km.

People inside buildings usually feel tremors of magnitude 3 to 4 as a brief sway or vibration, stronger on the upper floors. As a rule, they do not cause damage.

The magnitude and coordinates may change as new data comes in.