They have reached a new low by going after family members.
It seems like anyone with money can hire an (wannabe) assassin nowadays to kill someone in the Montreal Mafia and create chaos. Doesn't seem like the all-powerful 'ndrangheta from Ontario would be behind this.
What could be the case is that there is an open contract out on Del Balso and these guys decided to collect it..
"It was between the brothers Kay -- I had nothing to do with it."