Matthew Edward Taylor, 57, was found dead in San Francisco’s Tenderloin District on March 15, 2015. His death was investigated by the San Francisco Police Department’s Homicide Detail and later classified as a cold case after investigators were unable to develop enough evidence or witnesses to identify a suspect.

Investigators say the case has faced challenges common to cold cases: few concrete leads and difficulty finding credible witnesses willing to come forward. The SFPD’s Cold Case Unit continues to list the investigation as open and uses forensic analysis and collaborations with other agencies and community members; the Mayor’s Office has offered rewards to encourage tips that could lead to an arrest and prosecution.

If anyone knew Matthew, was in the Tenderloin on March 15, 2015, or has information that might help the investigation, please contact the San Francisco Police Department.