As the horrifying scenes from Germany’s third largest city sparked outrage across the world many in German pinned the blame directly on the country’s leading politician and her open door policy on migrants.
Mrs Merkel is cutting short a holiday in the Alps to return to the country today.
Police revealed the gunman who killed nine people and injured at least 20 others at a Munich shopping mall is an 18-year-old German of Iranian descent Ali Sonboly.
Sonboly complained that he had been bullied for seven years before firing his handgun into children in a MacDonalds restaurant.
Police are probing claims which suggest Sonboly – whose father works as a taxi driver – lured some of his young victims to their deaths with a promise of a free burger.
At least nine people have been confirmed dead following the shootings at McDonalds and the Olympia shopping centre in the north-western Moosach district.
Now furious Germans, and critics across Europe, are rounding on Angela Merkel and calling on the Chancellor to resign.
Twitter user @steveOc7 said: “Another terrorist attack in Europe. RIP to those that died in #MunichShooting
#AngelaMerkel has a lot of blood on her hands.”
While @InfoConor added: “Only surprise about #MunichShooting is that it took this long before it happened. Still happy with last years decision Angela Merkel???”
And @KGHohenstauffen added: “The relatives of the raped and killed should thank Angela Merkel for the destruction of Germany.”
Susan Tutt said: “Has anyone found Angela Merkel? Why is she in hiding? Her people deserve to hear directly from her! #MunichAttack”
Chancellor Merkel’s ruling party suffered widespread losses to the anti-immigrant Alternative für Deutschland in this year’s local elections.
And as the nation gets set to go to vote in the national federal elections next year, polls are suggesting she could be ousted.
Another user @HillBuzz aka Kevin DuJan said: “What will it take for Angela Merkel to resign from office? German people need to wake up she is responsible for all of this.”
J Mäntyvaara added: “Angela Merkel must leave after this because she is dangerous for whole Europe.”
Mrs Merkel has yet to make any comment on the situation in Munich however she is not thought to have travelled to the city.
Earlier this week Germany’s interior minister warned of the “serious” threat from lone wolf attacks in the country and across Europe, telling the public to expect further attacks.
The stark assessment of Germany’s security situation follows a warning from the French Prime Minster that his country should “learn to live with the threat” from Islamist extremists.
Speaking in Berlin, Interior Minister Thomas de Maizière said the Afghan refugee who attacked train passengers with an axe in the southern state of Bavaria was now thought be from Pakistan.
Responding to the incident, which was claimed by Islamic State, the senior German cabinet minster said similar attacks were highly likely.
The influx of more than a million refugees has sparked outrage on the streets of Germany since Mrs Merkel the country’s leader used her New Year address in 2015 to urge citizens not to have ‘coldness in their hearts’ but to embrace the 1.1million newcomers.
She has been blamed for fuelling the European migrant crisis by promising to welcome those who make it to Germany.
And while at first she was praised by Germans for her decision to allow many of those escaping war and poverty to stay – the situation has spiralled.
He told reporters: “Like several EU countries, like the whole EU, Germany is also in the target area of international terrorism. Therefore, I have said for a long time, the situation is serious.”
The French PM issued a strikingly similar warning this morning, saying that the country must be prepared for more deadly attacks.
He said: ”Even if these words are hard to say, it’s my duty to do so: There will be other attacks and there will be other innocent people killed.
“We must not become accustomed to, but learn to live with, this threat.”
Germany was added to the list of terror-struck European nations after an axe-wielding 17-year-old Afghan refugee attacked passengers on a train in the southern state of Bavaria.
The multiple crises involving radicalised young men with links to groups operating in the Middle East and North Africa – including those in Brussels, Paris and Nice – have stretched the continent’s intelligence services to breaking point.
Alan Mendoza, executive director of the Henry Jackson Society (HJS), said the German train attack “illustrates the reality that some ISIS sympathisers will have slipped through European borders”.
The London-based think tank said around two per cent of Germany’s population arrived last year, making it “impossible in practice for European security services to screen new arrivals with thoroughness sufficient to preclude the possibility of attacks”.
Boris Johnson, the Foreign Secretary, said: “I am shocked and appalled by the terrible attack unfolding this evening in Munich, and the loss of life.
“My thoughts are with those injured and the families of those killed.
“We stand ready to assist our friends in Germany. Our travel advice to UK nationals in the area tonight is to stay indoors and follow the advice of the local authorities.”
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