A 52 year-old man was taken to hospital following a serious assault in Cardiff Bay.
Detectives say he was punched unconscious while standing on Louisa Place in Butetown at around 11pm on Monday night.
He needed treatment for serious head and facial injuries.
South Wales Police are appealing for witnesses to come forward - it's believed there were a number of people in the area at the time of the attack.
Anyone with information should call 101 or use the live web chat, quoting reference no. 2500274327

Swapping date night for drysuits at Barry Dock RNLI
13,900 French Rugby Fans fly into Cardiff Airport ahead of Six Nations Fixture
Vale Councillor blasts school funding in the county
Bear Field Skate Park set for major upgrade as part of new Placemaking Plans
New apprenticeship courses in construction to be introduced in Wales
Former Penarth Bank could become a cafe
New poll shows majority of Welsh voters lack voting confidence ahead of Senedd Election
Construction hub secured for rail upgrades
Prolific thief banned from Holton Road
Cowbridge: plans for more holiday lodges
Man dies suddenly in Romilly Park
Cash boost for Sully Primary School
Speed limits reduced despite objections
Concern over imported chicken in school meals
A48 closed after three-vehicle collision
Rhys unveils red bench 'in living memory'
Barry: plans lodged for 70-home development