An earthquake of magnitude 5.5 struck Ethiopia, east of the capital Addis Ababa, early on Saturday, the German Research Centre for Geosciences (GFZ) said.
The quake was shallow, at a depth of 10 km (6.2 miles), GFZ said.
The area has been shaken by a multitude of minor quakes since a nearby volcano began showing signs of imminent eruption at the start of the year.