New Port Richey -- Many residents of Pasco County are still wondering: what was that boom they heard Wednesday night?

The Pasco County Sheriff's Office received about 20 calls from around the county reporting a loud boom around 5 p.m.

Sheila Perry lives in Millpond Estates in New Port Richey. She said the boom rattled the windows and shook her house.

"First, I thought do we have earthquakes here because there's been so many earthquakes," she said. "I just have never had anything shake the house like that before."

Officials think it might have been a sonic boom or sound waves, but no one is really sure.

The sheriff's office said it doesn't have any information about military operations or explosions in the area.

No damage was reported as a result of the boom.