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Kimberly Kempke, a concerned resident from Anderson Township in Cincinnati, Ohio, is convinced the sounds she heard earlier this week were more than fireworks.

And video footage captured by local resident Steve Hart shows the moment this bizarre event struck their community.

While you cannot hear the loud bang from the CCTV recording, it does show a flash of light filling the sky.

Another angle shows the man's son reacting to the moment the event occurred.

(Image: YOUTUBE)

Kimberly, who has shared the clips on two local Facebook pages, was left bemused by the whole thing.

She said: "The sounds were like true booms. They sounded like a powerful explosion.

“It’s unlike anything I’ve ever seen or felt before and I’ve been very up close with fireworks many times."

Since the footage gained popularity online, it has also received interest from conspiracy theorists.

YouTube channel secureteam10, run by Tyler Glockner, claims that the unexplainable sounds are coming from underground.

He also revealed that just days ago a seismograph recorded something moving from the east to the west coast of the US in just 19 seconds.

And since he has uploaded it, viewers have been quick to speculate that something is secretly going on below the surface.

One comment read: "I think the government is tunnelling underground."

Another added: "Just like War of the Worlds."

And a third even claimed: "It's a war we are fighting in a parallel universe."

Only last month, mystery "trumpet" sounds in New York left residents convinced a secret tunnelling programme had commenced.

And before that, we saw similar scenes in Ohio.