At least one person is dead and 12 injured after a severe storm system including tornadoes hit the Dayton, Ohio, area late Monday night, authorities said.

About 68,000 households and businesses in the state were without power Tuesday morning.

Mayor Jeffrey Hazel of Celina, Ohio, about 80 miles north of Dayton, said in a news conference Tuesday that Melvin Delhanna, 81, died when the storm pushed a vehicle into his home.

Mercer County Emergency Management Director Mike Robbins told NBC affiliate WDTN that at least 12 people were injured in the wake of the storms and extensive damage. The Ohio Department of Transportation used snow plows to remove debris off Interstate 75.

"We probably have more than a handful of tornadoes that we need to look at on the ground throughout the region, maybe even more," said John Franks, a meteorologist with the National Weather Service in Wilmington, Ohio.

The weather service issued 36 tornado warnings overnight Monday across the region, he added.

The National Weather Service confirmed a "large and dangerous" tornado on the ground near the Dayton suburb of Trotwood in Montgomery County just after 11 p.m.

Dayton resident Tenley Taghi told NBC News the tornado left her street in ruins, adding that she didn't hear any warning sirens.