2020 – It was announced that Silver's health is expected to gradually improve during the next two months and was still unable to attend court. He was due to appear in court for the third time on 7 August. 7 August 2020 Defence solicitor Martina Moran of Gearoid Geraghty & Company said that Silver was still receiving treatment at the Central Mental Hospital. It was now the fourth time Silver has been deemed unfit to appear by video link at Harristown District Court. He was due to appear in court via video link again on 21 August. 21 August 2020 Silver was deemed medically unfit to attend court for the fifth time and remained at the Central Mental Hospital in Dublin. It was reported that the extent of the investigation involves 200 statements, 250 exhibits and 70 segments of CCTV footage, while gardaí made inquiries with a witness in Australia. He was due to appear in court via video link again on 4 September. 4 September Silver was deemed medically unfit to attend court for the sixth time and remained at the Central Mental Hospital. Harristown Court was informed that the file into the killing of Detective Garda Colm Horkan was sent to the Director of Public Prosecutions. He was due to appear in court via video link again on 18 September. 18 September Silver was deemed medically unfit to attend court for the seventh time and remained at the Central Mental Hospital. Further details of the extent of the investigation were outlined at Harristown District Court when a defence solicitor questioned the length of time it was taking for the file to be sent to the Director of Public Prosecutions. Gardaí carried out over 350 house-to-house enquiries, taken over 200 written statements and viewed 70 pieces of CCTV footage. He was due to appear in court via video link again on 7 October. 23 October Silver was deemed medically unfit to attend court for the tenth time and remained at the Central Mental Hospital. A court heard that the case of Silver accused of murdering Detective Garda Horkan should proceed without the accused being present. He was due to appear in court via video link again on 6 November. 6 November Further charges were considered against Silver as he was deemed medically unfit to attend court for the eleventh time and remained at the Central Mental Hospital. He was