A strong storm slammed some areas of Pennsylvania, damaging numerous businesses, many in a shopping plaza, overturning cars and downing trees and power lines.

The scene in the Wilkes-Barre business district reportedly resembled “a war zone,” with debris littering the area.

Six minor injuries were reported and there were reports of people trapped in vehicles. Witnesses said it was the worst such hit ever for the business district and if it had swept through during business hours, things could have been much worse.

The storm struck the Wilkes-Barre Township shopping plaza late Wednesday night. The area was under a tornado warning at the time.

The National Weather Service said it would be in the township Thursday to survey the damage and determine whether it was a tornado that touched down. Teams will also be in Bradford County, checking out the damage there.

Emergency crews from across the region raced to the township. The American Red Cross was on scene assisting first responders and others.

Township police wrote on their Facebook page that there were reports of “multiple collapsed buildings.” They asked drivers to avoid the area to allow emergency personnel access to the shopping plaza.

Photos posted on social media show shattered storefronts and major damage to businesses including a Panera Bread restaurant, a Barnes & Noble bookstore and a Dick’s Sporting Goods. Debris lay scattered in parking lots and on streets and sidewalks.

Democratic U.S. Sen. Bob Casey of Pennsylvania took to Twitter and urged people in the path of the storm to stay safe and “please heed the warnings and follow the directions of local officials.”