Matthew Daniel Forest, 21, of Calgary, is charged with robbery, accessory after the fact to robbery and accessory after the fact to murder in the death of Maqsood Ahmed.
Jean Bertrand Havyarimana and Lloyd Kollie, both 19, are charged with robbery and second-degree murder.
Ahmed was injured last October when he was attacked while carrying a night deposit after closing his money-lending business.
Ahmed, who was 55, was transported to hospital where he died of his injuries.
A woman who was employed by Ahmed was not harmed.
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