Two aid workers who had been kidnapped in Sudan's Darfur region have been released by their captors, reports say, BBC reported.

Sharon Commins and her Ugandan colleague Hilda Kawuki were working for the Irish charity Goal when they were seized in the Kutum area in July.

Ireland's Foreign Affairs Minister Micheal Martin said he was "delighted and relieved" to hear the two volunteers had been freed.

The Sudanese government confirmed the pair were freed early Sunday morning.

Sudan's state Minister for Humanitarian Affairs, Abdel Baqi al-Jailani, said: "They are free, they are in good health... [and] were released earlier this morning."

"No ransom was paid," the Sundanese minister stressed to reporters in Khartoum, adding that local tribe leaders had put pressure on the kidnappers to release the workers.

Irish national Sharon Commins and Ugandan Hilda Kawuki were taken hostage at gunpoint at an aid compound in Katum on 3 July, reports say.