Carl F. Arndt was found stabbed to death on January 22, 1986, inside his fifth-floor apartment in the Northward Building on Third Avenue in downtown Fairbanks, Alaska. Official city materials list him as 50 years old; a compiled cold-case profile records him as a 48-year-old White/Caucasian male.

The homicide has remained unsolved and the file is still listed among municipal cold cases.

Anyone who lived in Fairbanks in 1986 or who has information about the Northward Building or its residents at that time is asked to come forward.