German police have released the second person they had arrested on suspicion of being linked to Anis Amri, the Berlin truck attacker.<br /><br /> A spokeswoman for Germany’s chief prosecutor explained why. <br /><br /> “He was detained yesterday because there was suspicion that Anis Amri could have sent him a voice message and a picture via a messenger service shortly before the attack. Further investigation has shown that the detained was not Anis Amri’s possible contact person.”<br /><br /> The spokeswoman also confirmed that the Scania truck had a braking system installed which stopped further carnage as it was programmed to automatically stop the truck in any collision.<br /><br /> In other developments, Italian police searched three houses in and around Rome which they suspect Amri, a Tunisian migrant, had staying after being released from a detention centre in Sicily.<br /><br /> Italian Prime Minister Paolo Gentiloni said Amri might have been radicalised after arriving in Europe in 2011 – but he had no knowledge of any networks in Italy associated with him.<br /><br /> The Islamic State group has claimed responsibility for the attack on the Christmas market which killed 12 people.<br /><br /> It has also released a video showing Amri pledging allegiance to its leader, Abu Bakr al-Baghdadi.<br />
