A 38-year-old worker at a dépanneur in Montreal North is in custody after a disagreement at the store ended with another employee, a delivery man, in critical condition with stab wounds. 

The worker will face charges of armed assault, aggravated assault and possession of a dangerous weapon, Montreal police say.

He is due to appear in court this afternoon.

The incident happened at around 6:30 p.m. Sunday, near the intersection of Maurice Duplessis and Langelier.

Police are unclear what the prompted the dispute between the two workers.