Seventeen people have been rescued after dawn raids on Wednesday by police conducting an anti-slavery operation.
Five addresses, including a takeaway, were raided in Greater Manchester yesterday along with a further two addresses searched later.
The 17 rescued are currently with specialists from Greater Manchester Police (GMP) and the British Red Cross.
Two men are also under arrest on suspicion of offences under the Modern Slavery Act 2015.
Detective Inspector Chris Potter, of GMPs City of Manchester Division, said: Warrants like these are absolutely necessary in disrupting those who take advantage of people for cheap labour, exploit their willingness to work and completely disregard their right to live in a clean and safe environment.
Our utmost priority is safeguarding those people we believe to be exploited and make sure they have full access to the appropriate support.
Now, we will focus on examining the items weve recovered in our searches and intelligence weve gathered in line with our wider investigation, but we need people who have any information whatsoever or those who have spotted the signs of modern slavery to get in touch with us.
Its happening today, and in your area. Help us make it a thing of the past.
Police said the raids came after officers received a report in June that a man had been assaulted and trafficked to work in the UK in unacceptable conditions.
A modern slavery co-ordination unit was launched in Greater Manchester in 2015 to tackle the growing problem of crimes of slavery, human trafficking and exploitation.
Anyone with information should contact police on 0161 856 6198 or the independent charity Crimestoppers, anonymously, on 0800 555 111.