Andrew reportedly threatened staff in Tesco with a threat of $ 13 . Fifteen minutes before the raid he posted details of his arrest on Facebook . The Crown Court judge deems decades - old ' high risk ' to the police .
Andrew Hennells threatened staff in Tesco with a knife of February 13 . Fifteen minutes before the raid he posted details of his plan on Facebook . Norfolk Crown Court judge deems 31-year-old 'high risk ' to the public .