Two robbers punched a man in the face and knocked him to the ground before stealing his wallet yesterday night.
The victim, a Brighton man in his twenties, was left with minor face injuries after the attack in Grove Street, Brighton, at about 11pm.
Police arrested a 34-year-old man from Brighton during searches of the area, who is currently in custody, and are appealing for any witnesses to come forward.
Detective Sergeant Chris Sherwell said: “I believe the victim may have been followed from Albion Hill to Grove Street by the two offenders. The victim says there were a number of other people walking in the area at the time. I would like to hear from anyone who may have seen anything suspicious, or has any information to help identify the suspects.
“I’d remind people to be alert and vigilant when walking late at night. Try to stay with friends whenever possible and don’t walk home alone. If you think you are being followed, cross over the road, and if you are still concerned, go to the nearest public place, shop or pub and call the police on 999.”
The first suspect is described as white, aged 18-19, 5ft 7in, wearing a grey hooded top with the hood up.
The second suspect is described as 5ft 5in, of medium build, wearing a long black coat and a beany hat.
Anyone with information is asked to contact Sussex Police on 0845 60 70 999 quoting serial 1880 of 31/3, or anonymously to the independent charity Crimestoppers on 0800 555 111.
