UK police arrest 12 people over a suspected threat described as “extreme right-wing” and directed at an Islamic event. Multiple outlets report that officers acted on information indicating a potential serious threat to the religious gathering. Police say the arrests take place on Sunday and Monday at different locations across England as part of an ongoing investigation. The reports describe the suspected plot as aimed at disrupting or threatening attendees of the event, which one outlet says is expected to be attended by about 15,000 people. Authorities do not name the suspects in the provided accounts, and they do not detail specific alleged actions beyond the existence of a suspected threat. The cases are handled as part of counter-terrorism or related policing activity, with the focus on evaluating the threat, gathering evidence, and preventing any harm to the public attending the event. The investigation continues following the arrests.