Authorities added counts of rape, extortion for sex, harassing phone calls and cyber stalking against a Hammond man arrested last week on extortion in connection with a case that began on Facebook, according to Hammond police.

The Police Department has received dozens of phone calls about the alleged activities of Adam David Kolb, Lt. Vincent Giannobile said Wednesday.

He said law enforcement authorities in St. Tammany Parish and Jefferson Parish have also issued warrants for the arrest of Kolb, who is being held in jail in Tangipahoa Parish in lieu of $900,000 bail.