A middle-aged man has been robbed at knifepoint by two youths at The Level in Brighton.
One of the youths pointed a Swiss army knife at the victim and demanded his wallet and mobile phone.
The pair then ran off in the direction of Ditchling Road.
The robbery happened at about 8.20am on Saturday (9 April) as the man was walking along the path by the skate park.
The main suspect was bare-chested at the time.
He was described as white, about 6ft tall, aged in his late teens to early twenties and of skinny build. He had a pale complexion, shaven head with sharp facial features and was wearing baggy drawstring trousers with a black and white checked pattern.
The suspect, although shaken, was unharmed.
Sussex Police urged witnesses to call 0845 6070999 or to contact the independent charity Crimestoppers anonymously on 0800 555111.
