A man was grabbed by the throat and punched several times before being kicked by two robbers who stole his mobile phone and wallet.
The attack happened on Tuesday at around 5.20am on Thesiger Street in Cathays, Cardiff.
The victim originally began talking to his attackers as they drove past in a Peugeot 207 car.
After they had stopped, one of the men got out the car and held the victim against a wall by his throat before punching him several times.
Having fallen to the floor, the victim was then kicked by the second man.
Both men then searched his pockets before taking his mobile phone and his wallet.
Police are now investigating and are trying to trace the two attackers and their car.
The first is described being white, around 5ft 6ins tall and was wearing a grey hoodie and grey tracksuit bottoms.
The second is also described as being white, around 6ft 2ins tall, wearing a black hoodie and jeans.
Anyone with information is asked to call Cardiff CID on 029 2052 7420 or Crimestoppers anonymously on 0800 555 111.