Tornadoes and thunderstorms have swept through the US Midwest, destroying dozens of homes and upending school buses and police cars in a mile-long trail of destruction in Ohio, and ripping off siding on a nuclear plant in Michigan.
At least five people died in Ohio, including a child, authorities said.
Rescue officials in north-west Ohio were still searching through homes and could not say whether anyone else was missing, Lake Township fire chief Todd Walters said.
Police chief Mark Hummer flew over the damaged area and said at least 50 homes were destroyed and another 50 severely damaged, as well as six commercial buildings.
He estimated a seven-mile path of destruction about 100 yards wide. The storm, which hit at around 11pm on Saturday, fell over an area of farm fields and light industry, narrowly missing the heavily populated suburbs on the southern edge of Toledo.
"It's a war zone," Mr Hummer said. "It's pretty disheartening."
Mr Hummer said that among those killed were a person outside the police department and a motorist. He said a young child and two other victims were from nearby Millbury, a community of roughly 1,200 about 10 miles south-east of Toledo.
The National Weather Service confirmed that a Toledo-area tornado was part of the storm, said meteorologist Marty Mullen of the service's Cleveland office.
A township police and emergency medical services building looked to be a total loss. The storm ripped off most of the building's back half, tossing a car into where the building once stood. At least four of the township's police vehicles were destroyed.