The murder trial of a teenager accused of stabbing a pupil at a school was due to begin on Tuesday.

Bailey Gwynne was fatally injured at Cults Academy in Aberdeen in October last year.

A youth, who cannot be named for legal reasons, denies carrying knives and murdering the 16-year-old.

The trial at the High Court in Aberdeen is expected to last five days. At a hearing in Glasgow last week, prosecutors rejected a lesser plea of culpable homicide entered by lawyers for the accused.

The school, in the west end of the city, was closed for two days following the incident on October 28.

The charge against the teenager states he fought with Bailey and struck him on the body with a knife.

He is alleged to have had in his possession knives or bladed instruments and two knuckledusters at Cults Academy on occasions between August 2013 and the day of the alleged murder.