Mysterious boom lights up Hillsboro sky

PORTLAND, Ore. (KOIN) -- It was loud. It was bright. Many people heard it. No one knows what it was.

At 12:32 a.m. July 6, a loud boom shook Hillsboro and turned the night sky bright for a few seconds. The mysterious boom was caught on a camera, with the video below provided by Marla Smith.

A side-by-side photo of the moments when a loud boom happened in Hillsboro, 12:32 a.m., July 6, 2024 (Marla Smith)

KOIN 6 News reached out to Hillsboro police, but they didn't know what it was, either.