David Otto, counter-terrorism and organised crime expert at Global Risk International, told Daily Star Online: “It’s no longer the Al-Muhajiroun brand that it was before but these actives have not ceased.
“They’ve just not been visible which makes it even more worrying, because these groups have now gone underground
“That in itself is one of the major reasons why suppressive tactics only makes the groups more invisible and much more dangerous, compared to when you carry out what you call soft and hard approaches simultaneously.
“Even though the group is not very visible, it still has underground movements which are quietly radicalising more people.
“They’ve just not been visible which makes it even more worrying”Terrorism expert David Otto
“Now that ISIS has been eliminated from their stronghold, Al-Muhajiroun has seen more reason why going underground is the best option for them.”
Mr Otto previously claimed that these jihadis may attempt copycat-Rigby attacks in revenge for ISIS’ downfall.
He added: “Some have returned without governments knowing, they are now like sleeper cells.
“It makes it even more dangerous because you never know when they can carry out a replica of the Lee Rigby murder.”
Global Risk International monitors terrorist activity across Europe, Africa and the Middle East, working in tandem with governments and a raft of defence agencies.