Minnesota ? Police and National Guard soldiers blocked off neighborhoods Friday as city officials organized a cleanup from tornadoes that ripped through the city the night before, part of a turbulent system that fueled twisters across the state and killed at least three people.

Dozens more were injured in Thursday’s heavy weather. The National Weather Service collected 36 reports of tornado sightings, with northwestern and southern Minnesota hit hardest. If the sightings are all confirmed, it would exceed the previous state record of 27 in one day, in 1992.