South Wales police are reviewing footage which appears to show a police vehicle pursuing an e-bike in Cardiff - shortly before a crash which left two teenage boys dead. (Subscribe: https://bit.ly/C4_News_Subscribe) The force said the CCTV film was being "recovered as part of the investigation" - while insisting there had been no vehicles on the road "when the collision occurred". Social media posts about a police chase sparked several hours of rioting in the Ely area well into the night. ----------------------- Follow us: Facebook - https://www.facebook.com/Channel4News/ Twitter - https://twitter.com/Channel4News TikTok - https://www.tiktok.com/@c4news Instagram - https://www.instagram.com/channel4news/