Berlin - Berlin Christmas market attacker Anis Amri spent a
prolonged period of time in Switzerland and possibly even made
several trips there, Germany's ZDF television reported on Friday.
The 24-year-old Tunisian drove a large lorry into revellers on
December 19, leaving 12 dead. He was shot dead by Italian police on
the outskirts of Milan four days later.
Not only was he able to travel from Germany to Italy after the attack
but investigators are now checking to see how long he spent in
Switzerland before the atrocity, ZDF said.
The station added that contact data, found on Amri's mobile phone
following the Berlin attack, is being reviewed by Swiss authorities.
Swiss prosecutors opened a case related to the Berlin market attack
on Wednesday, without specifying who is the focus of the proceedings.
The case involves suspicion of supporting a criminal group as well as
a violation of the ban on membership of terrorist militias, such as
Islamic State.
ZDF said investigators were particularly interested in whether Amri
was in Switzerland when he obtained the gun - an Erma pistol - which
he used to murder the Polish driver of the truck.
Some Swiss cities have a burgeoning Islamist scene.