Edan Dario Ardon-Mejia, a 30-year-old San Francisco resident, was fatally shot in a double shooting in the Mission District on December 3, 2018. The attack happened around 1 a.m. near 16th and Valencia streets. He was critically injured, taken to a hospital, and later died; a 55-year-old woman was also critically wounded but survived.

The San Francisco Police Department has been unable to identify suspects or make arrests. No descriptions of potential suspects or a motive have been released, and investigators say a lack of witnesses and concrete evidence has hampered the inquiry. The case is listed among the city’s cold cases and remains open.

Does anyone who was in the Mission District near 16th and Valencia on December 3, 2018 remember anything that might help investigators?