Read our Privacy noticePolice constable Andrew Harper’s mother has visited the scene of her son’s death as a petition to stop his killers being released from prison early approached 700,000 signatures. Pc Harper’s mother Debbie Adlam, who earlier this week said the family was “bitterly disappointed” by the Government’s decision, visited the scene of her son’s death on Thursday. open image in gallery Pc Andrew Harper’s mother Debbie Adlam (Stefan Rousseau/PA) ( PA Archive )On Friday afternoon the petition had more than 675,000 signatures. Defence Secretary Wes Streeting said it was “not OK” that the killers of Pc Harper were eligible for early release. The driver of the vehicle in the Pc Harper case, Henry Long, received a 16-year sentence and will not be eligible for release under the scheme.