Three Bulgarian air crew members working for the United Nations in Sudan have been abducted in Sudan's Darfur region, according to the U.N. food agency. The three, said to be a helicopter crew, were seized by armed men at an air strip, the World Food Programme (WFP) said. Bulgaria confirmed that three pilots had been seized in Darfur, the BBC reported. The WFP said the three people abducted had been working for the organization. According to the joint U.N.-African Union peacekeeping mission (UNMIS), the three were abducted on Wednesday night about 75kilometers (45meters) south-east of Geneina, capital of Western Darfur province. Bulgaria's foreign ministry said the three people kidnapped were pilots working for a private company, according to the BBC. It added that it was in contact with the U.N. mission in Sudan (UNMIS).