A magnitude 3.0 earthquake struck near Topolovgrad early this morning, Bulgaria's national seismology centre says.
The quake hit at 7:24am, with its epicentre 5.1km northwest of the town. Haskovo is 65km away, and Sofia 250km away.
Duty officers at Topolovgrad municipality told BTA no one has reported feeling the quake, and there are no reports of damage.