An earthquake measuring 3.2 on the Richter scale hit eastern Romania on Tuesday morning. There were no reports of damage or injuries.
It was the second tremor to shake the Vrancea region in the past six days.
The National Institute for Research and Development of Earth Physics said it occurred at 5.58 am.
The epicenter was 65 kilometers east of the central city of Brasov, and 128 kilometers north of the capital, Bucharest.
There have been 22 temblors since the beginning of April, with a magnitude of at least 2.
The largest recent quake of 4.9 on the Richter scale occurred in the early hours of Saturday.
It had its epicenter in the same Vrancea region and reverberated through Romania, Bulgaria, Ukraine and Moldova.