Multnomah County deputies say they pulled a body out of the Willamette River on Thursday morning.
Someone reported the body near the Port of Portland's Terminal 4 around 11 a.m.
River patrol deputies then recovered the body of an adult man 20 minutes later.
They took the body to the river patrol office, where detectives and a medical examiner responded.
Deputies said they're not releasing any additional information until the man can be identified and his family notified.
Multnomah County sheriff's detectives are investigating.
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