A man mourns at a makeshift memorial for the victims of the Christmas market attack near the Kaiser-Wilhelm-Gedaechtniskirche in Berlin on December 24. MILAN-Investigators on Saturday sought to hunt down where the Berlin Christmas market attacker got possible logistical support to cross at least two European borders and evade capture for days before being killed in a police shootout during a routine stop in a Milan suburb. Tunisian fugitive Anis Amri ‘s fingerprints and wallet were found in a truck that plowed into a Christmas market in Berlin on Monday night, killing 12 people and injuring 56 others.