OFFICIAL-U.N. mission says 4 people taken to Khartoum
Sudan said it had arrested a Norwegian, a Briton and a South African for illegally entering a disputed border area and accused them of helping the South Sudan army, a claim the South denied
Kiir, back from China, says Heglig belongs to S.Sudan
Fighting across the disputed border erupted in late March after Sudan and South Sudan failed to resolve a number of contentious issues including oil export fees and citizenship