London: British Prime Minister Theresa May said on Sunday that the incident in London was being treated as a potential act of terrorism.

‘Following updates from police and security officials, I can confirm that the terrible incident in London is being treated as a potential act of terrorism,’ May said just over four days before voting is due to begin in a June 8 national election.

‘This is a fast moving investigation,’ May said. ‘I want to express my huge 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.’

London mayor Sadiq Khan said an attack in central London late on Saturday was a ‘deliberate and cowardly attack’, and that he would take part in a security meeting with Prime Minister Theresa May later on Sunday.

‘We don't yet know the full details, but this was a deliberate and cowardly attack on innocent Londoners and visitors,’ Khan said. ‘I condemn it in the strongest possible terms. There is no justification whatsoever for such barbaric acts,’ he added.