LONDON, July 13 (Reuters) - British police said on Monday they had arrested 12 people after a suspected threat directed towards an Islamic event at the weekend, as part of an investigation which they described as "extreme right-wing terrorism-related".

The police say a 'credible threat' prompted organisers to end the UK Ijtima event in Suffolk early, with 15,000 attendees leaving safely.

Twelve people have been arrested after an Islamic event had to end early due to an alleged threat from extreme right-wing terrorists. Police advised organisers of the UK Ijtima event in Shrubland Hall,

Counter-terrorism police said the UK Ijtima, organised by Tablighi Jamaat, ended early after officers uncovered what they described as a 'potential serious threat'