Cops have charged a 13-year-old boy with second degree murder in relation to a stabbing last week outside Marlborough Mall.
The arrest of the boy on Wednesday comes the same week police announced a 16-year-old is facing a second-degree murder charge.
Gabriel Okeynan, 45, of Calgary, was stabbed outside of the northeast mall last Friday and died of his injuries Tuesday.
Neither teen can be named under the provisions of the Youth Criminal Justice Act.
Police believe the incident was random and motive was robbery.
Anyone with information is asked to call homicide unit at 403-428-8877 or Crime Stoppers at 1-800-222-8477.