missing person; unidentified person
Abbreviation of terms like 行方不明者 (missing person) or 身元不明者 (unidentified person). Used in news, police reports, and formal contexts.
See also: 行方不明者 · 身元不明者 (みもとふめいしゃ)
The police are continuing the search for the missing person.
An unidentified person was found at the accident site.
Explicitly means 'unidentified person' (identity unknown). 不明者 can cover this meaning as well, but is less specific.
missing person
A compound of 不明, “unknown, missing, or unidentified,” and the person suffix 者.