The Winnipeg Police Service's tactical unit is outside a residence on Nairn Ave. west of Watt St. 

The Winnipeg Police Service could not say much in the afternoon, but confirmed there is an ongoing situation.

"We do have road closures, Nairn Avenue between Stadacona and Watt Street is currently closed," a spokesperson with the WPS said. They could not give any other information at this time. However, police in the area said there was "concern for public safety."

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The police are outside a residence in the 400 block of Nairn.

Witnesses say that a smashed vehicle remains on the Nairn overpass heading westbound in the right-hand lane.

Traffic in the area is at a standstill, and the public has been advised to avoid the area completely. Watt Street and Talbot Avenue are also heavily delayed from traffic being rerouted at the scene of the investigation.