Immigration officials and police have arrested 36 Chinese nationals in raids on homes and businesses across central Scotland.
Searches were carried out at 17 addresses in the Glasgow, Falkirk and West Lothian areas on Wednesday.
It was part of an ongoing operation led by the UK Border Agency.
Two British women, aged 25 and 42, were also detained and charged with offences in relation to the facilitation of illegal immigrants.
A spokeswoman for the UK Border Agency said: "Officers from the crime team, working with SOCA and officers from Central Scotland, Lothian & Borders and Strathclyde police forces executed 17 search warrants around the Glasgow, Falkirk and West Lothian areas.
"These warrants were executed on domestic and business addresses and resulted in the arrest of 36 Chinese nationals for suspected immigration offences."
A report has been submitted to the procurator fiscal and further inquiries are ongoing.