The remains of four men found following a mill fire have been identified after police travelled to Vietnam to collect DNA samples.Specialist officers began searching Bismark House Mill, in Oldham, Greater Manchester, in July after human remains were found by demolition workers following a blaze on May 7. On Friday, Greater Manchester Police said the men had been identified as Cuong Van Chu, 39, Uoc Van Nguyen, 31, Duong Van Nguyen, 29, and 21-year-old Nam Thanh Le.