Warren Zappelli was 9 years old when he disappeared from Mendocino, California, on May 19, 1971. He is listed as missing in several national databases, but a lack of significant evidence or new leads has left family and investigators with little to go on.

Authorities continue to ask the public for any information that could help locate Warren or clarify what happened.

Did anyone in Mendocino in 1971 remember seeing Warren or have information that was never shared with investigators?