Hillary Clinton tweeted: “Monitoring the horrific situation in Munich. We stand with our friends in Germany as they work to bring those responsible to justice.”
Donald Trump posted on Facebook: “Our prayers are with all those affected by the horrible attacks in Munich. This cannot continue.
“The rise of terrorism threatens the way of life for all civilized people, and we must do everything in our power to keep it from our shores.”
Foreign Secretary Boris Johnson 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.
British Prime Minister, Theresa May said: “I am shocked and saddened by the horrifying attack in Nice last night. Our hearts go out to the French people.”
First Minister Nicola Sturgeon tweeted: “Horrific reports from #Munich. Thinking of everyone there and also the emergency services at the scene.”
Labour leader Jeremy Corbyn tweeted: “Shocking news from Munich - my thoughts are with the people of the city at this time.”
Leader of the Liberal Democrats Tim Farron tweeted: “My thoughts and prayers are with the people of Munich tonight. All of Britain stands with you.”
German president Joachim Gauck said: “My thoughts are with all the victims and all those who are grieving or fearing for a loved one. And I feel a bond with all those who are working to protect people and save lives.”
Charlie Flanagan, Irish Minister for Foreign Affairs and Trade wrote: “Our thoughts are with the families and loved ones of anyone affected by this horrific event, and we extend our deep condolences to the German people.”