At the time, it was the deadliest mass shooting in Canada since the École Polytechnique massacre in 1989.
At about 10:30 a.m. on April 5, 1996, 30-year-old Mark Vijay Chahal drove to his ex-wife's home, where one of her sisters was preparing for a wedding.
The eldest sister's mother-in-law and daughter were injured, and two granddaughters were left unharmed.
Two empty 10 round magazines and 28 revolver shell casings were found at the scene.
At the motel, he wrote a note apologizing to his family for the shooting and writing several numbers of his relatives.