Canadian Prime Minister Justin Trudeau has announced that he plans to continue his campaign as usual after wearing a bullet-proof vest the day before due to security threats.

"This will never change the way I run my campaign," Trudeau said on the sidelines of an election rally in York a week before the legislative election.

Trudeau was wearing a short-sleeved shirt as usual during his election festivals, but on Saturday he wore a windbreaker under long-sleeved clothes.

Asked by reporters about the nature of the threats, Trudeau replied: "My first concern was with my family and all Canadians in the room." He declined to give further details.

"Threats against political leaders have no place in our democracy," his main conservative rival, Andrew Sher, wrote on Twitter. New Democratic Party leader Jagmit Singh called the threats against Trudeau "disturbing."

Trudeau's arrival was delayed by more than an hour and a half on Saturday for an election event in Mississauga, a city on the outskirts of Toronto, where some 2,000 supporters awaited him.

The channel "CBC" that the security presence there was higher than usual after a security threat, but his campaign team refused to give an explanation to strengthen security measures.

During election campaigns, the Canadian police maintain a daily log of hate messages targeting political leaders over the Internet for fear of possible violence.