A teenager who attacked a shop assistant with a knife during a failed robbery has been jailed for four-and-a-half years.

Jordan McNaughton, 18, admitted assaulting Akmal Jamshed Rana and attempting to rob him at the Day to Day Store in Duart Crescent, Edinburgh, on October 25 last year.

He was originally charged with attempted murder, but the prosecution accepted his guilty plea to a reduced charge.

The court heard that McNaughton was under the influence of so-called legal highs and Valium when he committed the crime.

McNaughton was told by judge Lady Stacey: "You have a shocking record. Shopkeepers are entitled to go about their business without you going in with a large knife and frightening them."

Lady Stacey ordered McNaughton, who is assessed as being a risk to the safety of the public, to be monitored in the community for two years after his release.

She told him: "It's time you got a hold of this and stop whatever is making you take legal highs and Valium and go into a shop armed with a knife. Only you can stop it.'