New Delhi, July 13 -- British counter-terrorism police have arrested 12 people over a suspected threat targeting a major Islamic event in eastern England, describing the investigation as being linked to "extreme right-wing terrorism."

Police said the arrests were carried out on Sunday and Monday at locations across England after officers became aware of what they described as a "potential serious threat" directed at the religious gathering.

The event, attended by around 15,000 people, took place at a country estate in Suffolk from July 9 to July 12.

Authorities said the gathering largely proceeded as planned, although it ended earlier than scheduled on Sunday following the security concerns.

Police have not disclosed specific details ...