Fire and rescue crews were onsite but remained outside the building while the gas company, Consumers Energy, shut off a 2-inch gas main that was leaking prior to the explosion. A worker from the gas company was investigating the leak about two blocks from where the explosion took place.
"In the course of that investigation, the building down the road here exploded," Company spokesperson Debra Dodd said . The blast was felt two miles away, "there was a large thump," said by City Manager John Zech.
Aerial footage from the scene by CNN affiliate WDIV showed dozens of firefighters working to shore up the remaining structure . "It's a very precarious situation," Dodd told CNN.