Swiss police said yesterday they had dismantled a network that imported Thai women and men and forced them to work as prostitutes in several Swiss cities.

Police in the canton of Bern said in a statement they had opened their probe last year when a woman of Thai origin told investigators “she had been held against her will in a Bern establishment and forced to prostitute herself.”

The main suspect, a 42-year-old Thai woman with a Swiss residence permit, was arrested during the second half of last year in Germany and had been extradited to Switzerland, Bern police said.

The woman, whose name was not given, appeared to have been actively running the network since the end of 2008 and herself operated a brothel where both women and men of Thai origin living in Switzerland illegally worked as prostitutes.

Most of the victims came from poverty in Thailand and had known they would be working as prostitutes in Switzerland, police said, but because of the massive fees the network charged to get them to the country and for being allowed to work in its brothels. they basically became sex slaves.

Each prostitute had to earn at least 60,000 Swiss francs (€50,000) and in some cases as much as 90,000 Swiss francs (€75,000), before being able to pay down their debt and actually pocket some of the money they made themselves.

In some cases they had to sign loan contracts offering any real estate holdings they had in Thailand as security, police said. The main suspect has been accused of victimising 26 people in the canton of Thurgau and 31 others in the cantons of Bern, Solothurn, Lucerne, Basel-Stadt and Zurich. Six other suspects, a Swiss and a Thai man and four Thai women, are in custody.