WITNESS APPEAL: Police are trying to trace a dog-walker who may have seen an assault during which a youth tried to snatch a mobile phone.

The attack happened at about 8.15pm on Saturday, November 3 in Headingly Crescent on the Red Hall estate in Darlington.

Police say the 25-year-old victim was punched in the face by an assailant who was about 5ft 8ins tall, of medium build and white.

Anyone who can help is asked to contact PC Tony Young on 101 extension 6614451.