Lyndon Berry Mason, known to some as Lonnie, was fatally shot multiple times on November 9, 2003, at about 12:33 a.m. in the 4300 block of 1st Street SE in Washington, D.C. The Metropolitan Police Department responded and opened a homicide investigation, but no motive or sequence of events has been released and the case has grown cold.

There have been no arrests and no suspects publicly identified. The MPD is offering a $25,000 reward for information that leads to an arrest and conviction in the case.

If anyone knew Lyndon Berry Mason, witnessed the shooting, or has information about activity in the 4300 block of 1st Street SE on the night of November 9, 2003, please contact the Metropolitan Police Department with what you know.