A murder investigation is underway after a man died following a fight on Richmond Bridge, in southwest London.
Met Police officers were called at around 4am on Saturday, November 26, to reports of a fight on the 18th century stone river crossing.
A man, in his early 30s, was found suffering serious injuries and was given CPR by officers.
He was taken to hospital, where he died later that morning.
His next of kin have been informed and are being supported by specialist officers.
A post-mortem examination will be held in due course, and no arrests have been made at this time.
DCI Katherine Goodwin 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."
And Ch Supt Lis Chapple, from Richmond Police, said: "My thoughts are with the man who died and his family.
“We will do everything we can to support our colleagues as they work to establish what has happened here.
"A [crime] 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."
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.