Police said on Wednesday that three men and one woman were arrested in Copenhagen and an additional man was arrested in Malmö, Sweden on charges of human trafficking.
The five arrestees are suspected of forcing five Bulgarian women to work as prostitutes in Copenhagen's Vesterbro district.
“They have brought women from Bulgaria to Denmark. They have recruited, transported and housed them and sent them onto the streets to make money,” police spokesman Carsten Ahrends told Ritzau.
The three men and one women arrested in Copenhagen will be held on remand for the next 27 days, while the Malmö man will be extradited to Copenhagen to face charges.
Police said that Wednesday's arrests were the culmination of a long investigation into Vesterbro's prostitution scene.