President Trump on Sunday criticized the mayor of London for his comments following an attack in the city that killed at least seven people and wounded dozens more.

"At least 7 dead and 48 wounded in terror attack and Mayor of London says there is 'no reason to be alarmed!'" Trump tweeted Sunday morning.

At least 7 dead and 48 wounded in terror attack and Mayor of London says there is "no reason to be alarmed!" — Donald J. Trump (@realDonaldTrump) June 4, 2017

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Trump had earlier tweeted that terrorism “will only get worse” if officials don’t “get down to the business of security for our people” and end political correctness.

Trump appeared to be referring to comments London Mayor Sadiq Khan made earlier in the day, when he said there was no reason to worry about the increased police presence in London. Khan, the son of Pakistani immigrants, became the first Muslim mayor of a major Western capital when he was elected last year.

"Londoners will see an increased police presence today and over the course of the next few days," Khan said in a statement given to the BBC.

"There's no reason to be alarmed. One of the things the police and all of us need to do is ensure that we're as safe as we possibly can be," he continued.

"I'm reassured that we are one of the safest global cities in the world, if not the safest global city, but we always evolve and review to make sure we're as safe as we possibly can be."

An attack Saturday on and near the London Bridge killed at least seven people and wounded almost 50 others.

London police told reporters they believed they had killed all of the attackers involved.