Far-right politicians across Europe have blamed the continent’s open borders policy for enabling the Berlin market attacker to evade capture for four days.

Anis Amri, 24, is suspected of driving a lorry into a crowded Christmas market in the German capital on Monday evening.

He was shot dead by armed police in a suburb of Milan, Italy, on Friday morning, having travelled from Germany through France and then into Italy.

Sources said a rail ticket found on the Tunisian’s body suggested he had caught a high-speed train from France to the northern Italian city of Turin and then taken a local train to Milan.

Right-wing leaders across the continent said the ease with which the alleged terrorist appears to have crossed borders highlighted the failings of the Schengen pact, which established open borders between its member states. Germany, France and Italy are all members of the agreement, along with most other EU states.

Marine Le Pen, the leader of the far-right National Front in France, said: "This escapade in at least two or three countries is symptomatic of the total security catastrophe that is the Schengen agreement.

“Without permanent national borders, France and its neighbours are reduced to learning that an armed and dangerous jihadi was probably wandering on its soil only after the event.

"I reiterate my pledge to give back France full control of its sovereignty, its national borders and to put an end to the consequences of the Schengen agreement."

Her comments were echoed by Nigel Farage, the former leader of Ukip.

He said: "If the man shot in Milan is the Berlin killer, then the Schengen Area is proven to be a risk to public safety. It must go."

Berlin Christmas market lorry attack Show all 18 1 /18 Berlin Christmas market lorry attack Berlin Christmas market lorry attack Several people have been killed after a lorry drove into crowds at a Christmas market in Berlin REUTERS/Fabrizio Bensch Berlin Christmas market lorry attack 'At least nine' people have been killed and more than 50 injured. AP Berlin Christmas market lorry attack Emergency Services rush a Berlin market victim to an ambulance Associated Press Berlin Christmas market lorry attack Police cordoned off the square at Kaiser Wilhelm Memorial Church following the incident REUTERS Berlin Christmas market lorry attack Rescue workers inspect the lorry that crashed into a Christmas market close to the Kaiser Wilhelm memorial church in Berlin EPA Berlin Christmas market lorry attack Emergency crews inspect the lorry that ploughed into a Berlin Christmas market, killing at least nine people AFP Berlin Christmas market lorry attack Fire crews attend the scene of the attack AFP/Getty Berlin Christmas market lorry attack Armed police secure the site of a lorry attack at a Christmas market in Berlin REUTERS Berlin Christmas market lorry attack Crushed debris is visible beneath the wheels of the vehicle REUTERS Berlin Christmas market lorry attack An injured man is pushed to an ambulance REUTERS Berlin Christmas market lorry attack Medics attend an injured person after the lorry attack which killed at least nine and injured more than 50 people AFP/Getty Berlin Christmas market lorry attack Firefighters examine the lorry which was rammed into a Berlin Christmas market REUTERS Berlin Christmas market lorry attack A person is carried into an ambulance REUTERS Berlin Christmas market lorry attack View of the lorry that crashed into a Christmas market in Berlin, killing at least nine and injuring at least 50 people AFP/Getty Berlin Christmas market lorry attack Rescue workers push a person on a stretcher to an ambulance Getty Berlin Christmas market lorry attack Firefighters assess the damage after the lorry rammed the Christmas market, killing 'at least nine', and injuring more than 50 people AP Berlin Christmas market lorry attack Firefighters stand beside a toppled Christmas tree at the site of the suspected terrorist attack in a Berlin Christmas market AP Berlin Christmas market lorry attack Damaged stalls at the scene of the incident at a Berlin Christmas market where at least nine people have been killed EPA

In Italy, meanwhile, populist leader Beppe Grillo said the Schengen pact “must be reviewed”.

He said: “Italy is becoming a parade of terrorists, we are not able to recognise and report that. Thanks to Schengen they can cross our border undisturbed."

Mr Grillo suggested it was “crazy” that two Italian police officers had had to risk their lives to deal with a “terrorist wanted by half of Europe”.

The Schengen agreement should be temporarily frozen in the case of a terrorist attack in Europe, he said.

Other far-right leaders also voiced their objections to the policy.