Police and emergency services respond to reports of a woman falling ill at the Tonnau music festival at the Carreglwyd Estate on Anglesey. Multiple outlets report that the incident occurs in the early hours. An 18-year-old woman becomes unwell at the event, and emergency responders attend. She is taken to hospital, where she later dies. Following the death, the festival is cancelled. Both reports describe the police involvement and the fact that the woman’s condition deteriorates to the point that she dies in hospital, rather than at the venue. No further details on a cause of death are provided in the accounts shared, and no suspects or additional injuries are mentioned. The incident leads to the cancellation of the event as authorities manage the response and related arrangements.