Update at 5:40 p.m.
North Bay Police have reopened Wyld Street to the public but are keeping silent about details of the investigation.
"We will be sending out more details about today's incident on Monday," spokesman David Woolley said in a statement.
The North Bay Police are telling residents to avoid downtown North Bay as they are in the middle of an active investigation.
"There will be an increased police presence in the area of the 100- and 200-blocks of McIntyre, Main, and Oak Streets as well as Wyld Street as the investigation proceeds," said David Woolley, corporate communications officer with the North Bay Police Service.
"The North Bay Police Service advises the public to avoid the area."
Police say one individual has been taken to hospital in critical condition.
Numerous social media reports say it is a stabbing and police are looking for a pair of suspects.
"As this is an active investigation, we cannot release any additional information at this time," Woolley continued.
Police say there is no immediate threat to public safety.
City police blocked off Wyld St. between Main and McIntyre, while heavily armed OPP officers have taped off the area behind the North Bay Museum. An OPP canine unit was seen along the fence behind the Quints Home and Marina Point.
BayToday will try to get more information on this developing story...
PUBLIC AWARENESS - #NorthBay Police are currently conducting an active investigation in downtown North Bay. #Police advise the public to avoid the 100- and 200-blocks of McIntyre, Main, and Oak Streets as well as Wyld Street.— North Bay Police (@NorthBayPolice) December 4, 2021