London terror attack
People leave the area with their hands up after an incident near London Bridge in London, BritainReuters

World leaders, including Indian Prime Minister Narendra Modi, expressed their horror and grief over Saturday's twin terror attacks on London Bridge and Borough Market in London. As many as six people were killed and three suspects were shot dead in the attacks.

Prime Minister Narendra Modi said in a tweet that the attack in London was "shocking" and "anguishing."

UK Prime Minister Theresa May said in a statement that she has received updates on the "fast moving investigations and wanted to express her "gratitude to the police and emergency services who are on the scene . . . Our thoughts are with those who are caught up in these dreadful events."

Praising the heroic response of emergency services was United States President Donald Trump, who has offered the full support of the US government.

France stands "more than ever at Britain's side," said newly-elected French President Emmanuel Macron in his tweet. "In the face of this new tragedy, France is more than ever at Britain's side," Macron tweeted and added, "My thoughts go out to the victims and their loved ones."

French President Emmanuel Macron
French President MacronReuters

Reacting to the attacks, Macron also said that he now aims to increase defence cooperation with both the UK and Germany.

Autralian Prime Minister Malcolm Turnbull added-