The family of a 16-year-old boy who died after being stabbed last year in Halifax erupted in anger during sentencing Thursday for one of four teens charged in his death.

Members of Ahmad Al Marrach's family stormed out of the Halifax courtroom where Judge Mark Heerema sentenced the girl to another three months in custody at a youth detention centre, followed by two years of close supervision in the community.

The girl, who previously pleaded guilty to manslaughter, was 14 years old at the time of…