Injured person in custody, suspected to be responsible for downtown North Bay fire
One person is in hospital with injuries and is also in police custody following a fire Wednesday on Main Street East in North Bay.
Shortly before 3:30 p.m., fire crews and police were called to a mental health-related crisis and fire at a building.
When crews arrived on the scene, they saw a significant amount of smoke billowing out of the building.
One person was injured in the blaze and they have been taken to the North Bay Regional Health Centre where they are also in police custody.
Main Street East is currently closed between Fisher Street and Regina Street.
Fire crews are trying to tackle leftover hotspots in the attic.
After an initial search of the structure, crews will be conducting a second search to see if any animals or people are still inside.
"We always go in a second time to ensure," North Bay Fire Chief Jason Whiteley said.
"The fire is being treated as suspicious. We will begin an investigation once the building is deemed safe to do so."
Firefighters will consult with police on whether the Ontario Fire Marshal needs to come in and conduct their own investigation.
"Most likely they'll be called," said Whiteley.
CTVNews.ca Top Stories
BREAKING | U.S. President Joe Biden touches down in Ottawa
U.S. President Joe Biden arrived Thursday evening in Ottawa for a whirlwind 27-hour visit expected to focus on both the friendly and thorny aspects of the Canada-U.S. relationship, including protectionism and migration on both sides of the border.

Trudeau, Biden could agree to end 'loophole' in Safe Third Country Agreement: CP source
Canada and the United States are negotiating a deal that could see asylum seekers turned back at irregular border crossings across the border, including Roxham Road in Quebec.
Eastern Ont. mayor wants more help from feds to manage influx of asylum seekers, supports STCA renegotiation
As the federal government looks to renegotiate the Safe Third Country Agreement with the U.S., an eastern Ontario mayor says his city needs more help from Ottawa to deal with the influx of asylum seekers arriving through irregular crossings like Roxham Road.
Opposition parties affirm call for interference inquiry, amid questions over MP Han Dong
Amid renewed questions over the pervasiveness of alleged interference by China in Canadian elections and affairs broadly, opposition MPs voted Thursday afternoon to affirm a parliamentary committee's call for the federal government to strike a public inquiry.
'Scream as loud as you can': 5 boys rescued from NYC tunnel
Five mischievous boys had to be rescued after they crawled through a storm drain tunnel in New York City and got lost, authorities said.
Make sure to check your grocery bill otherwise you may pay more: Survey
A majority of Canadians have seen a mistake on their grocery receipts in the last year, according to a new survey conducted by Agri-Food Analytics Lab at Dalhousie University.
Asteroid to hurtle past Earth closer than the moon this weekend
An asteroid discovered just last week will pass closer to the Earth than the orbit of the moon this weekend, an occurrence so rare it happens only once in a decade, according to NASA.
Number of Canadians receiving EI at record lows, down 44 per cent from last year: StatCan
The number of Canadians receiving employment insurance benefits are at record lows and down 44 per cent from last year, new figures from Statistics Canada show.
Indigenous sisters developing video games to revitalize Mohawk language
Two Kanien'keha:ka (Mohawk) sisters from Montreal are on a mission that is close to their hearts: to save their ancestors' first language by developing video games young and old can play.