A Hongkonger held prisoner and forced to work at a scam farm in Myanmar has been rescued and is back across the border in Thailand, SAR officials have confirmed.

Thailand's The Nation newspaper reported that the woman, 31, was freed on Sunday after the Thai police and army reached out to commanders of the Democratic Karen Buddhist Army which controls an area south of Myawaddy in Myanmar where the woman was being detained by a "Chinese call-centre gang".

In recent weeks, ransoms have been paid to secure the release of other Hongkongers being held captive in the region, but sources told RTHK that this was not the case this time.

In a statement, Hong Kong's Security Bureau said a task force it set up in response to the detentions will "arrange for the individual's return to Hong Kong as soon as possible".

It added that the task force will "continue to actively assist and follow up on all relevant request-for-assistance cases of Hong Kong residents who have yet to return".

Several SAR residents are still believed to be being held prisoner by criminal gangs in Southeast Asia.