Updated: 4:30 p.m.
Six teenagers were injured in a single-vehicle crash late Thursday night in Anoka County.
The sheriff's office reported it happened just after 11 p.m. in the city of Ham Lake.
Authorities said a vehicle carrying six 17-year-olds was traveling south on the 16800 block of Xylite Street Northeast "at a high rate of speed" when it crashed into a tree.
Four of the teens were taken to a hospital by ambulance; the other two were airlifted from the scene.
Authorities said late Friday afternoon that all six sustained serious injuries and were being treated at local hospitals.
The sheriff's office and the Minnesota State Patrol are investigating.
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