Updated Jan. 8 at 10:05 a.m.
Greater Sudbury Police said in a tweet at 9:18 a.m. that tow trucks were on scene, and the roadway would be clear shortly.
Police, paramedics and Greater Sudbury firefighters are en route to a collision at the intersection of Notre Dame Avenue and Lasalle Boulevard.
Extent of injuries is unknown at this time.
Motorists should expect delays in the area. Drivers are asked to leave plenty of room for emergency vehicles and to slow down.