Sergey Valerievich Koltsov was 22 when he disappeared from Seattle, Washington. The last contact with him was July 25, 2014; the Seattle Police Department was notified on July 29, 2014 and opened an investigation. His case was entered into NamUs on November 6, 2014.

Sergey is described as a White male between 6 feet and 6 feet 2 inches tall, 140 to 160 pounds, with light-brown wavy hair (short to medium length), deep-set hazel eyes, and possibly a light beard. He was known to prefer military-grade clothing and was last seen wearing black and white Converse high-top sneakers. Friends and family also knew him by the nickname Adam Lake. The official last known location is within Seattle’s 98104 zip code in King County.

Does anyone who knew Sergey, Adam Lake, or saw someone matching his description in Seattle around late July 2014 have information to share?