Montreal police said they have opened an investigation into what are called "suicide kits" containing sodium nitrate, which are allegedly being mailed to local residents by a man from Ontario linked to 120 deaths worldwide.

Police added on Monday that the kits were prepared by Kenneth Law, 57, and mailed to addresses in the Montreal area.

Law, a trained engineer and former chef from Mississauga, Ontario, was first charged in May in connection with the deaths of two people in the Peel region, accused of aiding and abetting suicide by selling hoods, masks, and lethal concentrations of sodium nitrite online.

Encouraging or assisting someone in committing suicide is considered a criminal offense in Canada.

But Law said he is not responsible for what people do with his products.

Montreal police said several different company names appear on the items that were mailed, including Academic/ACademic, Escape Mode/escMode, Imtime Cuisine, AmbuCA, and ICEmac.

Police also added in a press release: "SPVM urges vigilance, as the kits contain sodium nitrite powder, which can be deadly if ingested in large doses. It can also cause skin irritation if not handled with gloves."

Reports from family members, media, and authorities around the world have raised the total number of deaths that may be related to the law to at least 120, according to tracking by CTV News Toronto.

List of mental health resources in Quebec:

If you need help at any time, do not hesitate to reach out to:

Your family doctor (if you have one)

Local CLSC or CISSS or CIUSSS: 811

AMI-Quebec: 514-486-1448

Canadian Mental Health Association (CMHA): 514-521-4993

Center Interligne Inc.: (for issues related to sexual orientation): 0103-866-514

Depression Unknown: 514-278-2130

Support Group for Better Well-being: (GEME): 4463-332-450

Quebec OCD Foundation: 0012-727-514

Quebec Schizophrenia Society: 514-251-4000x3400

Suicide Action Montreal: 1 866 277 3553

Suicide Prevention Service: 1 866 APPELLE

Veterans Affairs Canada: 1 800 268-7708

If you need immediate help, call 911 or go to the nearest hospital.