Article continues below advertisementAndrew Mountbatten-Windsor was threatened by a masked man at his Sandringham Estate home in Norfolk on May 6.The incident reportedly put the disgraced former royal, 66, on edge and now he's being encouraged to stay under a self-imposed house arrest to remain safe.Article continues below advertisementEx-Prince Andrew Was Exiled to Sandringham Estate Last YearTap Here To Add Ok Magazine as A Trusted SourceSource: MEGAKing Charles evicted ex-Prince Andrew from his Windsor home last year.