A murder investigation is underway after a 21-year-old man died following being stabbed in Cardiff city centre in the early hours of Sunday morning.
Police say the man has not been formally identified but is believed to be from Grangetown in Cardiff.
Officers were called at approximately 4.50am this morning to St Mary’s Street following reports of an assault.
Police confirmed on Sunday afternoon that CCTV footage shows the man collapsing "as a result of being stabbed".
Emergency services performed CPR at the scene until he was taken by ambulance to the University Hospital of Wales, Cardiff, where he died.
His family has been informed and are being supported by family liaison officers.
South Wales Police say a number of officers and the police helicopter were in the area and a number of cordons remain in place while investigations continues.
Witnesses have described the suspect making-off initially in the direction of Wood Street, and then towards Penarth Road at the rear of Cardiff Central Railway station.