Multiple-vehicle crash on I-35W in Bloomington causes major traffic backup

The scene of the crash on Interstate 35W at 8th Street in Bloomington. Photo courtesy of the Bloomington Fire Department. (Supplied)
BLOOMINGTON, Minn. (FOX 9) - A multiple-vehicle crash on Interstate 35W in Bloomington has caused some major traffic delays.
Crash at 35W and 86th Street
What we know:
According to the Bloomington Fire Department, an injury crash on northbound I-35W at 86th Street is causing major traffic delays.
A picture posted by the fire department shows four vehicles that crashed in a line, the first being lifted onto the second vehicle.
MnDOT traffic cameras show I-35W northbound is down to one lane around the crash.
MnDOT's 511 map is reporting another crash just yards away. Traffic cameras show that a car and semi-truck collided but were able to move off to the side of the highway.
What we don't know:
What caused the initial crash is currently unknown.
The extent of the injuries is also not known.
The Source: A social media post from the Bloomington Fire Department, and MnDOT's 511 map.