Detectives investigating a street robbery in Vale Gardens, Portslade, are keen to speak to anyone who saw what happened or who may have other information that could help their enquiries.
The incident happened shortly before 1am on Wednesday (15 June) as the victim, a 27-year-old man from Southwick, was walking home listening to music on headphones.
Two men approached him from behind, punched him in the face and threatened him with a knife, forcing him to hand over his wallet. He sustained no serious injury.
Both his assailants were white men in their late teens to early 20s and both spoke with local accents.
One was 6ft, of slender build and wearing a black hooded anorak. The other was shorter – 5ft 7in to 5ft 8in, also of slender build, wearing a black-hooded top and grey tracksuit bottoms.
After stealing the wallet they made off on foot into Vale Park.
Anyone with information is asked to email email@example.com or phone 101, quoting serial 43 of 15/06.
Alternatively they can contact the independent charity Crimestoppers anonymously on 0800 555 111 (www.crimestoppers-uk.org).