Lighting flashes Saturday morning, June, 30, 2012 in Hebron Md.. Violent storms swept across the eastern U.S., killing at least nine people and knocking out power to hundreds of thousands on a day that temperatures across the region are expected to reach triple-digits. (AP photo by Salisbury Daily Times, Kristin Roberts)

WASHINGTON | The death toll is at least 18 in weekend storms that have left millions without electricity in a swath of states from the East Coast to Ohio and Illinois.

The latest reported death was in West Virginia. Authorities there said Monday a person died when riding an all-terrain vehicle that hit a fallen tree on a road early Sunday.

Previous reports had at least six people killed in Virginia, three in North Carolina, two each in New Jersey and Maryland, one in Ohio, one in Kentucky and one in Washington. Most deaths were from trees falling on homes and cars

Around 2 million customers across the region were without power Monday morning. And utility officials said the power would likely be out for several more days.