British authorities are on high alert today over fears that the Paris attacker, Salah Abdeslam, will bomb London during the New Year celebrations. The ISIS militant, currently on the run, is suspected to be hiding out in Europe with an accomplice after fleeing Morocco after last month’s massacre. Thesun.co.uk reports: Capitals across the continent are braced for an outrage amid concerns Abdeslam, 26, is crossing borders on a false passport. A French judicial source probing the Paris attacks told The Sun: “Abdeslam could easily be back in France. “He is a dangerous IS operative with access to arms and must be stopped at all costs. Another spectacular attack is possible and there is no way of telling where it might be.” A French Interior Ministry source added: “The entire state is involved in trying to capture Abdeslam and others like him. “Paris remains vulnerable but other capitals such as London are at risk. He could be back in France, in England or elsewhere. It is not difficult to travel under the radar.” Popular spots across Europe will be heavily guarded on Thursday night. Russia has warned citizens staying at home is the safest way to celebrate. And Austrian security sources say [...]