People on both sides of the bay in Barrington and Warwick and as far away as Somerset, Mass., reported hearing what sounded like an explosion at about 11:30 p.m. Monday. Some also reported seeing a light.
Area police and firefighters tried to find the source of the noise and light during land and water searches, but officials say nothing was found.
Coast Guard crews and local officials also searched Monday night for a boat reported to be in distress, but didn’t find anything.
TV stations reported receiving reports of an explosion followed by a loud hum. A Coast Guard spokesman says the Conimicut lighthouse near Warwick emits a hum pattern.