The body of Rev. Gilbert Dasna was found on the floor of a Catholic rectory in St. Paul.
RCMP say they believe John Carlos Quadros, who died in a shootout with police later that day, killed Dasna.
Three Mounties were hurt in the confrontation with Quadros, who owned a health-food store in the town.
Police are still investigating the deaths and have not released information about why Quadros shot the priest.
Dasna was born in Cameroon and had served in St. Paul since 2011.
A funeral was held Monday in St. Paul for Dasna and his remains are to be sent to Africa for burial.
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