Mr Di Nino told reporters on Tuesday he believes the killer was going after people affiliated with the board.
"The fact that the gunman approached our unit and targeted my family only leads me to believe that it was a targeted incident," he said.
Vaughan councillor Marilyn Iafrate told the York Region News that she was friends with Ms Camilleri and Mr Panza, calling them a "lovely couple".
"Rita was wonderful, a real spitfire, very intelligent," she said. "She was very thorough, very rational. She was helping residents before she was on the board."
