Islamic terrorists may be targeting mentally disturbed or disabled people in Britain in a bid to form a new brigade of home-grown suicide bombers

MI5 and police say the case of Nicky Reilly, who is being held over a nailbomb attack in Exeter, may indicate a new strategy of targeting vulnerable people with mental health problems to carry out attacks. A counterterrorism official said MI5 was investigating the extent to which Reilly had been manipulated by a “charismatic” Al-Qaeda recruiter. “It is a grotesque concept but they are using people who are clearly mentally subnormal,” the official said. “We know they have clever radicalisers who will take advantage of anyone they think they can manipulate, whether they have an IQ of 60 or 140,” he said. Reilly, 22, is a Muslim convert who has spent time detained in a mental health hospital. He has been described as a shambling introvert with the mental age of a 10-year-old. He is believed to have Asperger’s syndrome, a form of autism, and may also suffer from schizophrenia. Security officials say Al-Qaeda appears to have exported the tactic from Iraq, where disabled “foot soldiers” have been used to devastating effect. They point to a case in February when a suicide bomber in a wheelchair killed an Iraqi general in Samarra, north of Baghdad. Earlier, two women, initially thought to have Down’s syndrome, acted as couriers for a bomb in Baghdad, killing almost 100 people.