Authorities in Bialystok, Poland, evacuated about 10,000 people from their homes Sunday morning after a 500-kilogramme (1,100-pound) World War II-era bomb was found during construction work. Residents on about 60 streets in the northeastern city near the Belarus border, along with those living on 45 streets in two suburbs, had to leave after military experts determined there was a risk the bomb could explode while being extracted from the site by a crane.