Police appear to have broken part of an international human-trafficking ring that brings pregnant Bulgarian women into Greece and sells their babies to local families, authorities said yesterday. A 35-year-old-man was arrested in Lamia, central Greece, on Saturday after police raided an apartment where four pregnant women were being kept in filthy conditions. Authorities said that the four women had been given loans in Bulgaria, which they were unable to repay, and were then forced to get pregnant and have their child in Greece for a fee of about 3,000 euros. The gang is believed to then sell the infants to local families through a well-organized network. A search operation has been launched for another man and woman in Lamia. However, police believe the whole operation to be much larger.