William Robert Petro was 33 when his body was found on Muhammond Drive in Knoxville, Tennessee, on December 2, 1988. Knoxville Police Department opened a homicide investigation, but initial inquiries produced no significant leads and the case went cold.

Decades later the circumstances of Petro’s death remain unresolved. No arrests have been announced, and the identity of his killer or killers is still unknown.

If anyone knew William Petro, saw activity on Muhammond Drive around December 2, 1988, or has information that might help, please share what you know with Knoxville authorities.