The sound and reverberation of a mysterious boom left homes and people a like shaky in Stow, Massachusetts.
People started feeling it around 10 p.m. Wednesday. Almost immediately, the questions started popping up on social media.
"Anyone else hear the loud boom about 40 minutes ago??" said Melissa J McCarthy on Twitter. "I thought it was a car crash, but I guess police are investigating because it was heard throughout Stow and other bordering towns."
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"Big boom over Maynard, MA a few minutes ago... clear skies... meteor?" another person tweeted.
Stow police said they were investigating in a Facebook post late Wednesday night. Police said they checked all sectors of the town as well as the Massachusetts Fire Academy and found nothing "out of the ordinary."
What they did find is that other towns had similar complaints.
A series of loud booms rattled a neighborhood in Peabody for months earlier this year, shaking the ground and startling homeowners. The explosion sounds, which started in February, prompted both state and city officials to work together to try to determine the cause in August. Scientists said it was likely small earthquakes.