Thousands of foreigners freed from scam centres in Myanmar are stuck in limbo on the border with Thailand after a multinational crackdown on the compounds run by criminal gangs, three sources told Reuters on Monday.

Efforts to shut down online scam centers in Myanmar appeared to gain momentum on Monday as a top Chinese security official visited both sides of the Thai-Myanmar border.

A group of 200 Chinese nationals plucked from scam centres in Myanmar crossed into Thailand and were flown home on Thursday, as part of a multinational effort to repatriate hundreds caught up in massive internet fraud schemes,

Myanmar has handed over more than 100 Chinese scam centre workers to be repatriated through Thailand, the third batch in a major crackdown on the illegal operations.

An airlift carrying more than 1,000 Chinese nationals who had worked at online scam centers in eastern Myanmar began Thursday, after the rescued workers were taken across the border to Thailand and put on chartered flights to China.

China will fly home about 200 of its nationals found in scam-running compounds on the Thai-Myanmar border, a Thai security official said on Tuesday, as part of a multinational effort to crack down on illegal online operations run from the region.

Myanmar’s military government said it is ready to hand over about 1,000 foreign nationals rescued from cyber scam centers near the Thai border as authorities vowed to intensify a crackdown against transnational criminal groups.

Hundreds of Chinese workers started to arrive home on Thursday after being freed from online scam centres in Myanmar, as authorities crack down on the cyber fraud industry.

Inside a Thai military camp, four Ethiopian men on Wednesday showed the bruises and scars on their bodies they said were sustained during their time in one of Myanmar's most notorious scam compounds.