A routine patrol in Southeast Washington, D.C. turned into a double homicide on the night of December 28, 2014. Just before 10 p.m., an MPD officer on the 1300 block of Southern Avenue SE found 71-year-old Preston Cornelius Johnson Sr. of Capitol Heights lying on the ground outside a vehicle with a fatal gunshot wound. A further check of the car revealed the body of his son, 49-year-old Preston Cornelius Johnson Jr. of Suitland, also shot and pronounced dead at the scene.

Southern Avenue was closed in both directions while investigators searched for answers. Police offered a $25,000 reward for information leading to an arrest and conviction, but no suspects or arrests have been publicly identified. The deaths of two generations of the same family on one night remain unsolved.

Does anyone who lived in the area that night or who knew the Johnsons have information that could help move this case forward?