PORTLAND, Ore. (KOIN) — Tuesday marks the fifth day of searching for clues after two body parts were found in the Tualatin River in Hillsboro.

The Washington County Sheriff's Office are working under the assumption the body parts belong to the same person, but they can't confirm they are.

"This is really uncommon. Unsettling, concerning are other terms I would use to describe this incident," said the Washington County Sheriff's Office Public Information Officer David Huey.

On Friday, Aug. 8, a recreational kayaker found a body part floating in the river, prompting an investigation by the Washington County Sheriff's Office and the detectives from the major crimes team. But the mystery didn't stop there. About a mile downstream, detectives found a second body part the following day.

"The

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