SAN DIEGO - Residents across San Diego County say they've felt some shaking going on.
The mysterious rumbling happened around 9:30 a.m. with people from Encinitas to El Cajon and down to Chula Vista taking to Social Media and calling into KOGO Radio to say they felt it. Some residents also reported hearing a booming sound.
The U.S. Geological survey did not record any earthquake activity at the time of shaking. So far it's unclear if any military exercises were taking place that may have caused the shaking and the noise.
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