Gunman in Toronto slayings claimed condo building was making him sick

Francesco Velli, 73, had history of harassing neighbours before killing three members of the condo board and two others

The man who shot and killed five people at a suburban Toronto condominium on Sunday evening had spent years harassing his neighbours and threatening the building's condo board over a belief that the building's electrical room was making him sick.

At a news conference on Monday, York region police chief James MacSween identified the gunman in Sunday night's attack in the city of Vaughn as Francesco Velli.