A murder investigation has been launched after it emerged that a man found seriously injured near Richmond Bridge in the early hours of Saturday morning has died.

The Metropolitan Police say they believe the incident, which occurred around 4am, was filmed by onlookers on mobile phones and they have asked for witnesses to come forward.

A police spokesman said: "A murder investigation is under way in Richmond.

"Police were called at around 04:00hrs on Saturday, November 26, to a fight on Richmond Bridge.

"Officers attended and found a man, aged in his early 30s, suffering serious injuries. Officers administered CPR prior to the arrival of paramedics before the man was taken to hospital.

"Despite their efforts the man died later in the morning. His next of kin have been informed; they are being supported by specialist officers."

No arrests have been made at this time.

Detective Chief Inspector Katherine Goodwin is leading she investigation. She said: "We believe a number of people watched the incident unfold and some onlookers may have recorded footage on their mobile phones.

"Anyone who has yet to speak to us is urged to come forward immediately.

"My team are working to provide the deceased man's family with answers and the public could have valuable information that will help our investigation."

Chief Superintendent Lis Chapple, lead for policing in Richmond, said: "My thoughts are with the man who died and his family.

"We will do everything we can to support our colleagues in Specialist Crime as they work to establish what has happened here.

"A scene will remain in place and my officers will remain posted at the scene and in the area to speak to local people about any concerns they have, or information they might want to share."

The incident happened close to Richmond Bridge, near the Nando's restaurant, and the entire area was closed off through Saturday for forensic examination of the murder scene.

Anyone with information that could assist police should call 101 or tweet @MetCC ref CAD 1099/26 Nov.

To remain 100% anonymous contact the independent charity Crimestoppers on 0800 555 111 or visit crimestoppers-uk.org.

The terrible tragedy has seen a number of people to take to social media and express their sympathies for the family involved, who are understood to have links to the boxing community.

There have been renewed calls for the return of a police station in Richmond, which has been increasingly blighted with antisocial behaviour, drinking and violence around the weekends.