The lawsuits filed in Superior Court represent the latest people to come forward claiming to have been victimized by a sex trafficking ring operated in the city for more than two decades by Robert King, according to police, who was arrested on human trafficking charges in March. [...] arrested on state trafficking charges in March were Westport resident and convicted sex offender William Trefzger, as well as Glastonbury businessman Bruce Bemer, the owner of the Waterford Speedbowl where he purported assaulted young disabled men authorities say where victimized by the ring. The victims, according to police, were plied with drugs and alcohol and pushed the men into prostitution when they had racked up significant drug debts.