The Jackson County Sheriff's Office is investigating after a loud boom was heard by several people Tuesday night. Officials say the boom was heard in Madison County and Rockcastle County as well. They say they don't know what the noise was and that trying to figure it out will be like finding a needle in a haystack. In a Facebook post, Jackson County 911 said "No it's not a 'conspiracy' and no we are not hiding anything." WKYT UPDATED the story: It's the conversation of the county. Last night, Jackson County 911 dispatch received a handful of reports of an earth-shaking sound. "Well at about 6:19 pm yesterday evening a couple of people called in and said they heard this loud boom in the county. We went to check on it in the area, and we never found anything," said Jackson County Sheriff Paul Hays. Devonna Hisel lives in the northern part of the county, she says the mysterious boom shook the foundation of her house and scared a few of her neighbors. "We've had it shake the house before