The Victoria Police Department is providing some new information on Angus David Mitchell.
Mitchell was the suspect in a double murder in Burnaby.
He was shot and killed by police after he was tracked down in Maple Ridge.
Police say they dealt with Mitchell this past February on a mental health act call.
At that time they seized a gun from Mitchell.
He later made an application to have the gun returned.
No connections have been made linking the February gun seizure and the current investigations.
Meanwhile, the rifle belonging to Mitchell, was the same weapon used to kill two people at a Burnaby sushi restaurant on Sunday -- and in the attemped murder of his former landlord on Tuesday.
Integrated Homicide Investigation Team Spokesperson Sergeant Jennifer Pound says forensic teams made the match.
But she says this doesn't mean the investigation is over.
"Even at this point, we're still trying to determine the motive as far as the double homicide goes. And while these links can be confirmed in regards to the firearm, it certainly suggests Mitchell was the shooter in both the Burnaby cases, but that does not mean the investigation is concluded."
Investigators have also now confirmed the identity of the woman killed in the sushi restaurant, as 34-year-old single mother, Vivian Diem Huynh.