Marvin Knott, a 63-year-old African American man, was found dead in Detroit, Michigan on November 1, 2013.

No arrests have been reported, and databases that track unsolved Detroit murders list the suspect information as unknown. The case is open and regarded as a cold case, with law enforcement and advocacy groups continuing to include his information in hopes of new leads. Other individuals named Knott have appeared in unrelated legal matters since 2013, but nothing links those cases to Marvin Knott’s death.

Did anyone in Detroit in November 2013 notice something that might help explain what happened to Marvin Knott?