St Stithians learner Cameron Waldeck-Cooks alongside a social media post attributed to her brother, in which serious allegations are made about her death. Image: Supplied/Social mediaNew claims have emerged following the murder of St Stithians learner Cameron Waldeck-Cooks. A social media post attributed to Cameron’s brother, Ethan Waldeck-Cooks, has accused Ethan Coetzee of killing the 17-year-old. Brother speaks outPosts bearing the name of Cameron’s brother appeared on Instagram and X. However, the report said it could not independently confirm that Cameron’s brother authored the posts.