Prosecution releases CCTV footage after a man was found guilty of sexually assaulting and murdering his 16-year-old sister. Connor Gibson, 20, has been found guilty at the High Court in Glasgow of murdering and sexually assaulting his 16-year-old sister Amber. The body of Amber was discovered in Cadzow Glen park in the town at around 10.10am on Sunday November 28. Source: Crown Office and Procurator Fiscal Service