Thomas Bach, the president of the International Olympic Committee, has expressed shock and sadness over the horrific attacks in Paris on Friday.
A series of what appeared to be co-ordinated terror acts across the French capital left 128 people dead and an additional 99 in a critical condition, according to the latest figures from French officials.
Three confirmed fatalities occurred outside the Stade de France, where France defeated Germany 2-0 in an international friendly.
Bach has joined the long list of sporting dignitaries to speak out, as he said in a statement: "These attacks are deeply shocking. The IOC condemns these barbaric and cowardly acts.
"This is not only an attack on the people of France and Paris, this is an attack on humanity and all humanitarian and Olympic values.
"We stand united with all people from all around the globe. Our thoughts are of course with the families and friends of those who have been killed or wounded.
"We support also the outstanding work of so many men and women in the medical and security fields who are assisting the population in these very difficult moments.
"In these dark times, we should remember the unifying power of sport to unite people and communities and to bring peace and reconciliation. Today all people of goodwill will say: We are all French.
"I have ordered that the Olympic flag be put at half-mast to remember this tragedy."
Paris is in the running to host the 2024 Olympic Games.
A statement from the city's organising committee said: "We share the shock and profound sadness which has been expressed by so many people around the world and as Parisians we stand in solidarity with the people of Paris and of France in uniting against these acts of terror."