She was photographed looking forlorn just seven minutes after the murder of 12 people took place at the Christmas market just three miles away from the scene.
And her own party is now calling the killing of innocent victims a “war” situation saying they will put “machine guns” on the street.
Mrs Merkel was attending an event for migrants while the attack happened
We must state that we are in a state of war, although some people who want to see only the good can not see
Germany has accepted 1.1m refugees into the country with police having launched a raid this morning on a refugee camp in a disused airport in Berlin.
Police sources have now said a 23-year-old Pakistani called Naved B who was housed by the state in Berlin is not the suspect and that the suspect is on the run and armed.
Mrs Merkel is yet to comment on this news.
Mrs Merkel has cancelled today’s electoral visit to Mecklenburg-Vorpommern but spoke to the public during a televised press conference.
She said: “This is a very difficult day.”
However it has been confirmed by a spokesman for the constituency office in Greifswald that she has cancelled her public appearance as she confirmed she is to visit the scene of the crash.
The chancellor wanted to visit Rügen, Stralsund and Greifswald during her short visit before Christmas.
Mrs Merkel was pictured minutes after the attack
German politician Klaus Bouillon of Mrs Merkel’s CDU party said told Saarland radio: “We must state that we are in a state of war, although some people who want to see only the good can not see.
Bouillon announced intensified security measures amid fears there could be more attacks today.
“We will take it wherever we think it is necessary,” said Bouillon. “That means long-range weapons, short weapons, machine guns,” even if this sounds martial.
Meanwhile Mrs Merkel has been slammed by right wing AfD party which is surging in the polls.
Marcus Pretzell, an MEP for the right wing Alternative for Germany party said: “When will the German rule of law strike back?
“When will this cursed hypocrisy end? It is Merkel’s dead!”