Derious Keith Jones Sr., age 27, was shot and killed in Jacksonville, Florida, on December 13, 2010. His family and friends held a funeral later that month, and they have continued to seek answers.

The case has been highlighted by Project: Cold Case, which has worked with Jones’s family to keep attention on the investigation. Authorities and relatives continue to urge anyone with information to contact the Jacksonville Sheriff’s Office or Crime Stoppers; even a small tip could be important.

If anyone knew Derious, saw something in Jacksonville around December 13, 2010, or has information about this shooting, please come forward.