A Toronto woman is the latest to be charged in connection with an international human trafficking ring that came to light after a young woman stumbled into a Toronto police station last week claiming she was a sex slave.

She was one of six people who were arrested by Toronto police during simultaneous raids throughout the Greater Toronto Area late Friday, Toronto police Const. Isabelle Cotton said Monday.

Investigators believe the people arrested were ringleaders involved in bringing eastern European women to Canada on false promises of a modeling career then imprisoning them as sex slaves.

The woman arrived in Canada on fake passports after responding to an Internet advertisement.

Once in the country, they were forcibly confined and made to work as prostitutes. Police are not saying how many women may be involved.

There are no reliable statistics on how many victims are involved in human trafficking rings worldwide, but it's believed that it is a multi-billion dollar industry.