HAMILTON, Ohio -- The sounds of an explosion startled many and left them wondering what happened Sunday.
Officials still don't know what the sound was, but have at least one answer of what it wasn't.
The phones were ringing off the hook for a while at the Butler County Communications Center as calls flooded in from Hamilton's west side.
"It was a loud boom, but it didn't sound like a normal transformer," Darryl Pies said.
Pies said he heard it inside with all the windows closed. He and his neighbor, Jay Sutton, thought that it could have been the electric substation nearby, but that wasn't it.
"My wife was actually taking a nap, sleeping on the couch, and she was like, 'What was that? Did something fall in the house?'" Sutton said.
Sutton was able to tell her that nothing had fallen in the house, but that's it. Right now there aren't any answers as to what it was.
A reporter called Wright-Patterson Air Force Base. They said they did not have any operations Sunday in the skies above Butler County. They directed the reporter to the 122nd Fighter Wing out of Fort Wayne, Indiana. They haven't called back yet.