Several senior British Muslim clerics have added their support to a 'fatwa' against the Islamic State militant group currently wreaking havoc in Iraq and Syria.
The fatwa, which is a type of Islamic religious decree, calls IS "an oppressive and tyrannical group" and forbids British Muslims from joining.
Part of the fatwa, published in the Sunday Times, reads: "IS is a heretical, extremist organisation and it is religiously prohibited (haram) to support or join it; furthermore, it is an obligation on British Muslims to actively oppose its poisonous ideology, especially when this is promoted within Britain."
The decree was written by Sheikh Dr Usama Hasan, a former imam in east London and now head theologian at the anti-extremist Quilliam Foundation.
Among other supporters are the head imams of Leicester and Manchester Central Mosques.
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