Please complete your profile to unlock commenting and other important features.

Please select your date of birth for special perks on your birthday. Your username will be your unique profile link and will be publicly used in comments.
Narcity Pro

This is a Pro feature.

Time to level up your local game with Narcity Pro.

Pro

$5/month

$40/year

  • Everything in the Free plan
  • Ad-free reading and browsing
  • Unlimited access to all content including AI summaries
  • Directly support our local and national reporting and become a Patron
  • Cancel anytime.
For Pro members only Pro
Summary

Ottawa Police Looking For A 'Dangerous' Man Involved In A Stabbing On Rideau Street

The victim of the incident was reportedly trying to break up a fight.

Jaycob Mainville. Right: Château Laurier.

Jaycob Mainville. Right: Château Laurier.

Contributing Writer

The Ottawa Police Service (OPS) is looking for a 21-year-old man in connection with a stabbing that took place outside of the Château Laurier on Thursday morning.

This article contains content that may be upsetting to some of our readers.

On July 14 at around 10 a.m., a stabbing by Château Laurier on Rideau Street and Mackenzie Avenue occurred following an "altercation," according to an OPS press release.

"A man and woman were having an altercation, and a third person, a man who observed this dispute, attempted to separate the two parties," reads the statement.

"The suspect involved in the dispute proceeded to stab the man. He was transported to a local hospital with serious but non-life-threatening injuries," the police added.

21-year-old Jaycob Mainville is wanted in connection to the Rideau Street stabbing, which police said was an isolated incident. Additionally, OPS added that he is considered to be "armed and dangerous."

Shortly after 10:20 a.m. on Thursday, Ottawa Police said in a tweet that patrol officers were actively investigating the Château Laurier area and that their investigation is ongoing.

"Expect to see an increased police presence in the area," police warned Ottawa residents. Officers also warned people not to approach the man.

Mainville is pictured in a photo with a dark complexion, a short beard, and a moustache.

If you do see the suspect, you are encouraged by authorities to call 911.

The OPS ask that if you know anything about his whereabouts, you should call their central investigations unit at 613-236-1222 ext. 5166 or Crime Stoppers anonymously at 1-800-222-8477.

Unfortunately, Ottawa has seen several violent crimes this summer, including a separate stabbing incident where police fatally shot a 21-year-old man after stabbing a woman and two teens on Anoka Street in Alta Vista.

Explore this list   👀

    • Contributing Writer Sarah Crookall (she/her) is a multimedia news reporter and contributing writer with Narcity Ottawa whose investigative work has been featured in the Toronto Star and Metroland Media. Growing up in the Toronto area, Sarah obtained an advanced diploma in journalism at Durham College, later working as news editor at the Fulcrum newspaper while she completed a psychology degree with honours at the University of Ottawa. Sarah has covered a broad range of topics from crises in youth mental health to the suspicious death of a Bengal tiger along the outskirts of Algonquin Park.

    A man was shot and killed at Toronto Pearson — Here's everything we know so far

    Police were initially called to a "dispute" at Terminal 1 departures.

    Statistics Canada is hiring for census jobs that pay up to $131,000 but you need to apply soon

    Application deadlines are approaching for some 2026 census jobs.

    'Ken Killer' Paul Bernardo was sentenced 30 years ago — Here's where he is now

    He is still one of Canada's most notorious serial killers.

    Costco's flyer for September is out in Canada and these 14 groceries are cheaper now

    You can also save money on more than a dozen household products!

    Salary increases are slowing down in Canada for 2026 but here's who still gets a raise

    Some industries and provinces are doing much better than others. 👀