A man had his mobile phone stolen during a robbery in South Elmsall.
The victim, a 25-year-old man, was walking along Little Lane at around 11.45am on December 19 when he was approached from behind by a man.
The man then demanded his phone and assaulted him.
The victim fled after the suspect grabbed the phone out of his hand.
Detectives have released this e-fit image of a man they would like to speak to in connection with the incident.
The 25-year-old was not seriously injured in the incident and did not need hospital treatment.
Anyone who recognises the man pictured should contact DC Cooper at Wakefield CID on 101.
Alternatively, call Crimestoppers, anonymously, on 0800 555111.