The mystery in Clintonville Wisconsin continues.
It appears the area where the booms are being felt is getting bigger. Police also tell us the booms are intensifying. And that people’s houses continue to shake.
The original area of the booms was in the northeast part of the city.
Clintonville police started getting reports Sunday into Monday regarding the explosion-like sounds.
Police tell us there were many times overnight, 50 to 60 calls were coming in at once.
The source of these booms is not known.