Police warned 'vigilance' is needed because a second attack could be imminent at Berlin

Naved Baluch, 23, inset, who arrived in Germany a year ago, was seized and blamed for Monday night's carnage after witnesses saw him commit a traffic offence a mile away. Detectives, who flew him out of Berlin and across the country to Karlsruhe to question him, took 18 hours to realise Mr Baluch, who had no blood on his clothes and no injuries, did not drive a lorry through crowds to kill 12 and wound 48 more, below. It was only then they warned the public that the real ISIS killer was on the run with a gun. Today Berlin is in mourning, above, as police warned 'vigilance' is needed because a second attack could be imminent. Despite bungling the initial investigation police insist DNA, GPS and mobile phone data tied to the lorry used to murder and maim could lead to an arrest today.