London Mayor Sadiq Khan has condemned the "barbaric" and "horrific" terrorist attack on London Bridge and Borough Market as "deliberate and cowardly".
"My thoughts are with everyone affected, and I'd like to thank the brave men and women of our emergency services who were first on the scene and will be working throughout the night," he said in a statement.
"I am in close contact with the Met Commissioner and senior officers and am being kept updated on all developments. I will be attending the government's emergency Cobra meeting later this morning (Sunday AEST)."
He asked people to avoid the London Bridge area, and advised that London Bridge station remains closed.
While the situation is still unfolding, Khan asked both Londoners and visitors to "remain calm and vigilant" and to report anything suspicious to the police.
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"We don't yet know the full details, but this was a deliberate and cowardly attack on innocent Londoners and visitors to our city enjoying their Saturday night. I condemn it in the strongest possible terms. There is no justification whatsoever for such barbaric acts."
Khan encouraged people to follow the Metropolitan Police on Twitter for further updates and information.
