Oleksandr Dyadchenko, 24, disappeared from Bellevue, Washington and was last seen on December 9, 2021. He is described as a white male with brown hair and green eyes, 5 feet 10 inches tall and about 170 pounds. Friends and family had not heard from him after that date.

A single investigative lead emerged three days later when cellular data suggested his phone had been in the vicinity of the Seattle waterfront on December 12, 2021. That digital ping did not produce further evidence, and no additional public details about the circumstances of his disappearance have been released. The Bellevue Police Department handled the investigation.

Does anyone in the Seattle–Bellevue area remember seeing Oleksandr or his phone around December 9–12, 2021?