A Derry shop worker has been punched in the face.
The man was working in a shop at Foyle Street when two males wearing tracksuit tops entered the premises at around 8pm on Friday.
One of the males threw a glass at the employee and the other punched him in the face before both made off in the direction of Guildhall Square.
Several members of the public gave chase to the suspects into Guildhall Square, through Waterloo Place and onto William Street.
Police have confirmed that a man in his 20s was arrested and released on bail pending further enquiries.
They have appealed for anyone with information about the incidents to contact them on 0845 600 8000, speak a member of the local Neighbourhood Policing team directly or provide information anonymously through Crimestoppers on 0800 555 111.