A loud boom rattled windows and prompted calls to police departments in several towns along the shoreline Friday night.
People from Ledyard to East Haven and Milford reported hearing the loud sound and feeling their houses shake around 10 p.m.
"In Madison the whole house shook, the windows rattled," Susanna Maresca Bakula wrote on Facebook.
Police in Branford, Madison and Guilford reported receiving dozens of calls about the boom, but so far there has been no explanation. Guilford police even felt it inside their headquarters.
There were no storms in the area at the time and the U.S. Geological Survey website does not show an earthquake in Connecticut..
We will update the story when more information becomes available.
