A Soviet-made bomb dating back to World War II has been found near a kindergarten in Hungary.
Hungarian police began an evacuation in the central city of Szekesfehervar, moving about 10,000 people.
The 100kg (220-pound) Soviet-made bomb contained 25kg of explosives, a city official said.
Cities and towns across Nazi-allied Hungary were bombed heavily during the final months of World War II.
The bomb was found near a kindergarten sandpit in a densely populated housing estate in the city of Szekesfehervar, south-west of the capital Budapest.
"It's rare to find such a large bomb in an inhabited area of Hungary these days," Szekesfehervar county office head Norbert Dancs told a press conference.
Local media report that people living and working within 400m of the bomb have been moved out.
Hungary was under heavy bombardment by US, British and Soviet forces in World War II, with Budapest carpet-bombed on 37 occasions.
Many unexploded devices were left underground and are often uncovered during construction work. There have been 14 evacuations in the capital since 2008.
On Wednesday police evacuated around 1,500 people in Budapest after a bomb was found during construction work at an apartment block near Buda Castle.
All the bombs have so far been secured without damages or injuries.