Officials suspect a sonic boom may have been the source of an explosion that was reported by residents in the Alger area of northern Skagit County yesterday afternoon.

Sheriff’s officials say they received multiple reports of the explosion about 5:15 p.m. – apparently strong enough in some cases to knock items off shelves.

However, patrols of the area found no damage or injuries.

•Story originally published by:
KBRC Radio, Mount Vernon / WA - Sep 28.01

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