South Sudan has told the United Nations it will pull all police out of a disputed region on its border with Sudan and is committed to halting all fighting.
However, Khartoum responded by declaring a state of emergency in some border areas.
The conflicting developments raised questions whether United Nations and African Union appeals for an end to more than three weeks of border clashes between Sudan and South Sudan would bear fruit and avert full-blown war in theoil-producing region.
South Sudan, which gained independence from Sudan nine months ago under a 2005 settlement, told the United Nations it planned to withdraw all police from the Abyei region, according to a letter from the Juba government’s mission to the world body.
The letter also said South Sudan was committed to an "immediate cessation of all hostilities" - after the African Union ordered both parties to stop fighting. The pan-African body has given the rivals a three-month ultimatum to broker a deal.
The decision to withdraw from Abyei was taken at a cabinet meeting chaired by southern President Salva Kiir.
"All of these acts of peace are being done to reaffirm and demonstrate with concrete measures my government's true commitment to finding a peaceful solution to the outstanding matters with the Republic of Sudan," said the letter.
But in Khartoum, Sudanese president Omar Hassan al-Bashir declared a state of emergency in some areas of South Kordofan, White Nile and Sinnar provinces bordering South Sudan, the state-linked Sudanese Media Centre (SMC) said on its website. It gave no further details.
A South Sudanese soldier walks next to fresh graves of Nuba people killed during raids by Sudan's air force in the Nuba mountains. Photograph: Goran Tomasevic/Reuters
The areas have witnessed clashes recently between the Sudanese army and the SPLM-north, a militia group that wants to topple Mr Bashir and whom Khartoum accuses Juba of supporting.
Khartoum and Juba accuse each other of supporting rebel militia in each other's territories. Both denies the other's charges.
The South's army (SPLA) said today 21 people had died in two days of clashes with Khartoum-backed rebels in the South's oil-producing Upper Nile state. The SPLA said it was also pursuing Khartoum-backed militia near Western Bahr al-Ghazal.
Weeks of border fighting along the 1,800km contested border escalated after the two failed to agree on a string of disputes after the south's separation. The impasse has already halted nearly all oil production in both countries, damaging their shaky economies.
Reuters