Man fighting for his life after suffering cardiac arrest on Westminster Bridge

A man is fighting for his life after going into cardiac arrest on Westminster Bridge.

Officers were called to the scene at around 10.45am on Sunday to reports of a fight.

The man was taken to hospital in critical condition. Earlier, police said initial reports suggested the man had been stabbed.

Further enquiries by the Metropolitan Police have confirmed this is not the case.

Three people have been arrested on suspicion of attempted murder and another has been arrested on suspicion of affray.

Two of those arrested were taken to hospital with head injuries.

It is understood the incident is not being treated as terror-related.

Police said in a statement: "Officers are urging anyone with CCTV, mobile phone footage, or dashcam footage that may assist the investigation to come forward.

"Anyone with information or footage is asked to contact police on 101, quoting CAD 2468/24NOV.

"Alternatively, you can contact the independent charity Crimestoppers anonymously on 0800 555 111."