An ongoing effort targeting scam compounds along Thailand's border with Myanmar has led to only a small proportion of workers there being pulled out, a top Thai opposition lawmaker said, calling for more comprehensive measures to stomp out a booming illegal industry.

Hundreds of foreign nationals pulled out of scam compounds in Myanmar during a crackdown on centres run by criminal gangs have little food, scant healthcare and filthy toilets in the remote militia camp they have been taken to,

Thailand said Friday it had agreed with Myanmar and China to repatriate thousands of alleged scam centre workers stranded in camps at the Thai-Myanmar border, part of a crackdown on transnational crime.