Luis M. Venegas-Gonzalez was 23 when he was fatally shot at the Twin Peaks lookout in San Francisco on January 15, 2011. The shooting followed an altercation with a group described as two or three white or Hispanic males, and the suspects fled in a white Honda Odyssey minivan.

Authorities have asked anyone with information about the men or the minivan to come forward.

If anyone was at Twin Peaks that night or saw a white Honda Odyssey leaving the area, please share what you know with investigators.