German police today detained a Tunisian national on suspicions of having ties to Anis Amri, the suspected Berlin truck attacker, gunned down by Italian police last week, prosecutors said. <br/><br/>The federal prosecutor's office in a statement said that the deceased suspect, Anis Amri had saved the number of this 40-year-old Tunisian national in his phone and that the investigations indicate that he could have been involved in the attack. The suspect was taken into custody early today after federal police officers searched his home and work premises.<br/><br/>Amri is believed to have hijacked a truck and used it to mow down people at a Berlin Christmas market on the 19th of this month. Twelve people were killed and dozens were injured in the attack. The 24-year-old Anis Amri went on the run and was shot dead four days later by the police. The Berlin rampage was claimed by the Islamic State group.