The Philadelphia District Attorney’s Office announced Monday it has secured its first conviction in a trafficking case involving adult victims, in a case that prosecutors said they hope will lead other sex trafficking victims to come forward.

On Aug. 9, a Philadelphia jury found 50-year-old Richard Collins, of the Kensington section of the city, guilty on charges including four counts of trafficking in individuals, three counts of involuntary servitude and one count of rape. According to prosecutors, the man used drugs to lure five women into his home, where he later forced them into engaging in commercial sex.