Florence, KY- Police in northern Kentucky are reviewing a videotape that shows a vacant two-story house exploding and collapsing into a pile of debris.

WCPO-TV in Cincinnati reports that a surveillance camera at a nearby business captured the explosion Sunday afternoon. No one was hurt.

Police say the explosion was likely caused by a natural gas leak.

The blast sent debris and glass flying in all directions and blew out the windows in a nearby orthodontist’s office. Orthodontist Terry Gruelle says his employees rushed in Sunday to clean and vacuum.

Michael Toner, who works at a nearby business, says he saw an explosion in the middle of the house’s first floor. He says all of a sudden he heard “this big boom.”

The news station reports that the property had been for sale for about a month.