William Mayo Dunlop, 68, was arrested Friday at his Beaverton home on charges of sex abuse dating back to the late 1990s through 2002. Lieutenant Gregg Hastings with Oregon State Police says investigators are concerned there may be more victims. Hastings says the victim was a young girl when the alleged abuse occurred. She’s now 22, and only recently came forward to Columbia County Sheriffs. Dunlop is being held in Washington county jail on $250,000 bail. Detectives investigating the case are concerned there may be more victims and are asking anyone with information to contact them.