The British embassy was "urgently" investigating on Sunday the arrest in Sudan of one of its citizens, who was among four foreigners the Sudanese military said it captured in the tense Heglig oil region

The British embassy was "urgently" investigating on Sunday the arrest in Sudan of one of its citizens, who was among four foreigners the Sudanese military said it captured in the tense Heglig oil region.
  
"We are urgently investigating the arrest of a British national in Sudan," an embassy spokesperson told AFP. "We immediately requested consular access".
  
Sudanese army spokesman, Sawarmi Khaled Saad, on Saturday identified the foreigners as a Briton, a Norwegian, a South African and a South Sudanese.
  
"We captured them inside Sudan's borders, in the Heglig area, and they were collecting war debris for investigation," Saad said after the four were brought to the capital Khartoum.
  
A colleague of one of the men said they were deminers working on the South Sudanese side of the border.
  
Jan Ledang, country director for the Norwegian People's Aid (NPA) mission in South Sudan, identified one of the captives as employee John Sorbo. "It's impossible that they were in Heglig -- they were in Pariang" about a 90-minute drive from Heglig in the South's Unity state, Ledang said. They were doing some follow-up demining work in the area, he added.
  
The four were on a de-mining mission "and one of them was from the UN", said Josephine Guerrero, a spokeswoman for the United Nations Mission in South Sudan. "We're uncertain of the circumstances," she added.