Police say they have evacuated 3,000 people in Wroclaw, a city in southwestern Poland, after discovering a World War II-era bomb.

Wroclaw police spokesman Pawel Petrykowski says workers found the 1,100-pound bomb Thursday during construction of a new music hall that will go up near the Wroclaw Opera House.

Petrykowski said the area was evacuated, residents were asked to avoid the area and a special crane was brought in to remove the bomb.