Neighbors say the loud noise woke them up early Thursday morning in Milford Township.
There's a noticeable hole in the ground off Brick Tavern Road.
This is the latest in a string of more than 20 explosions that the FBI and local police are investigating between Bucks and Lehigh counties.
Officials qualify mysterious Bucks booms as explosions
They want to find whoever is responsible before someone gets hurt.
If you have any information, you are asked to give authorities a call at 1-800-426-TIPS.
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