The crash split a Honda Accord in two on Saturday night.
The identities of the victims have not been released by officials.
Brown now plays at Sunrise Christian Academy in Kansas.
The Gophers offered Carlson a scholarship, per 247 Sports.
The 4-star recruit is part of a very strong Minnesota 2020 class.
The last game didn't start until nearly 9:30 p.m. because of rain.