Three people have been killed in a crash between a car and a bus north of the Twin Cities.

The collision happened 7:50 a.m. near County Road 7 and Clover Trail in Nessel Township, about 40 miles north of St. Paul in Chisago County.

A 911 caller told the Chisago County Sheriff's Office that both a passenger car and a "transport bus" were engulfed in flames.

The Rush City Fire Department extinguished the flames, but three people in the car died as a result of the crash.

The victims have not yet been identified. It's not clear what caused the crash, though there were challenging conditions on roads in the Twin Cities area on Friday morning due to light snow coupled with the ongoing deep freeze.