It's a shootout that left a young father of 6 dead and 2 others injured, back in January.
Now the Jacksonville Sheriff's Office is asking for your help tracking down the other person, who may have been involved in that shooting on Cassat Avenue.
They're searching for the driver of a late 1990s to early 2000 Toyota Camry. They say the rear bumper is pushed in and there's a dent on a panel near the passenger side door. There is also a round sticker on the passenger side rear door window.
If you know who owns the car, or if you spot the car around town, you're asked to call police.
There's a reward of up to $3,000 for information that leads to an arrest.