Wettlaufer, 49, was charged Tuesday with eight counts of first-degree murder in the deaths of elderly residents at two nursing homes in Woodstock, and London, Ontario in what could be one of the worst serial-killer cases in Canadian history. Eight murder charges are the most brought against any individual in Ontario since eight men were killed on a farm west of London in an internal dispute involving members of the Bandidos Motorcycle Club in 2006, according to Woodstock police Chief William Renton. Lee Griffi, manager of corporate communications at Caressant Care, said in a statement that the company is “cooperating fully with police investigating the actions of a former staff member, a registered nurse, who left our Home’s employ approximately two and a half years ago.”

Wettleufer appeared in court Tuesday and was remanded into custody. “We are determined to avoid compromising the police investigation in any way and are therefore unable to provide any additional comment at this time.”

The home is part of the privately held Caressant Care nursing-home chain, which runs about 15 homes in mostly small communities across Ontario. Ontario Provincial Police have described the investigation, which includes police forces in London and Woodstock, Ont., as a “multijurisdictional death investigation.”

Events at a nursing home in Woodstock – Caressant Care Woodstock Long Term Care Home – are part of the probe. Victims James Silcox, 84, Maurice Granat, 84, Gladys Millard, 87, Helen Matheson, 95, Mary Zurawinski, 96, Helen Young, 90 and Maureen Pickering, 79, were residents at Caressant Care Nursing and Retirement Home in Woodstock. Dave Truax updates media about nurse's arrest 0:33

She was also employed at the Meadow Park facility in London, where the eighth victim died. Wettlaufer first became licensed as a registered nurse on June 8, 1995, with the College of Nurses of Ontario — the governing body for registered nurses, registered practical nurses and nurse practitioners. Caressant, a private nursing home chain, said it is cooperating with police and remains in contact with the Ontario Ministry of Health and Long-Term Care regarding the matter.
Ontario Provincial Police charge a former Canadian nurse, Elizabeth Tracy Mae Wettlaufer, in Woodstock, Ontario, with killing eight elderly patients between August 2007 and August 2014 at two Caressant Care Nursing and Retirement Homes facilities.