A new generation of “lone killers” is being groomed for terrorism in UK jails, a think-tank has warned. Major sporting events such as this year’s Olympic Games could be targeted by Muslim ex-prisoners who were radicalised whilst behind bars, according to a study published in the journal of the Royal United Services Institute (RUSI). It warned that up to around one in 10 of the UK’s 8,000 Muslim inmates were being successfully targeted by extremists inside jail and could form the next generation of terrorists. Michael Clarke, director of RUSI and co-author of the 2010 study, said: "Perhaps some 800...