Sean Jacob Lee Jennings, 27, is charged with second-degree murder in the death of Alor Deng in July 2014.
Deng was shot during an argument between two groups who met late at night in Edmonton's popular Strathcona district.
Jennings is also facing a first-degree murder charge in the shooting death of Theoren Poitras in Richmond, B.C., in October 2014. The 23-year-old was found lying in a pool of blood near an elementary school.
Police say their investigation yielded evidence related to several shootings, robberies and violent home invasions involving the torture and mutilation of people in both Edmonton and Lower Mainland, B.C.
Mounties in B.C. describe a "crime group," also involved in drug trafficking, as being responsible.
It was a shooting in Surrey, B.C. last September that helped officers make the arrest, said RCMP Staff Sgt. Jennifer Pound with B.C.'s integrated homicide team.
Four masked men had forced their way into a basement suite and duct-taped another man inside.
"A neighbour ... obviously heard what was going on, ran out to see what was happening and that neighbour, the innocent victim, was shot in the face," Pound said Monday.
He survived, she said, and provided police with valuable information.
Peter Blake Edmonds, 24, also of Edmonton, is charged with using a firearm in the commission of an indictable offence and being an accessory after the fact for allegedly getting rid of evidence after Poitras was killed.
Police expect others to be charged in the coming weeks.
Deputy police chief Brian Simpson with the Edmonton police said the violence is related to street-level crime.
"The undercurrent to everything that goes on basically is money," he said. "And a lot of it is about saving face and disrespect and having power."
— With files from CHED
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