Mysterious burst of light, loud boom puzzles Washington state residents

Officials are investigating the possible source.

Local officials in Grays Harbor County received hundreds of calls about the incident, the cause of which remains a mystery.

A surveillance camera situated outside a home in Grays Harbor County captured the flash on black-and-white footage as it lit up the night sky.

Grays Harbor County Sheriff Rick Scott said he saw "a huge flash of what appeared to be orange light" while he was driving, but he didn't hear the boom or feel the ground shaking.

"Whatever it was, was a huge, huge burst of bright light," Scott told ABC's Seattle affiliate KOMO. "It took up the entire horizon."

The sheriff's office did not immediately respond to ABC News' request for additional comment Thursday.

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