The Sudanese army has freed 14 Chinese nationals who were kidnapped in the volatile South Kordofan state, the official Sudan News Agency said Monday.

The news agency quoted Ahmed Haroun, the state governor, as saying the workers were taken to neighboring North Kordofan and were in good condition.

The report did not mention the fate of the other 56 construction workers who militants had captured when they attacked a construction site in a remote area Saturday.

At the time, Alsawarmi Khalid, spokesman for the Sudanese armed forces, blamed the attacks on the Sudan People's Liberation Movement -North, a rebel force in the border region with neighboring South Sudan.

China confirmed the incident but did not say how many of its workers were among the group of 70 who had been taken.

South Sudan became the world's newest nation last year after decades of conflict with the north.