Police arrest 12 over suspected far-right threat against Islamic event in Suffolk

Shrubland Hall. Arrests were made with the event already under way, which sources suggested indicated how late the intervention came. Photograph: David Goddard/Getty Images

Twelve people have been arrested, including three on suspicion of conspiracy to murder, over a suspected far-right threat against an Islamic event held over the weekend, police have said.

Counter-terrorism police are leading the investigation, which they said was related to “extreme rightwing terrorism” targeting an event held at Shrubland Hall in Suffolk.