A night of Labor Day celebration ended in a double homicide in Clive, Iowa. On the early morning of September 5, 2016, Johnny Lee Ollie Jackson, 29, of Des Moines, was killed by gunfire in the parking lot of the 7 Flags Event Center as an All Black Party was winding down. Kevin Lee Hall, 44, also of Des Moines, was fatally shot; two other people were wounded and survived.

About 250 people had attended the event, and roughly 100 remained outside near 2 a.m. after a fight that began inside reportedly spilled into the parking lot. Investigators say three firearms were fired and recovered one weapon that belonged to Jackson; they assert that two other handguns were removed from the scene before police secured the area. Detectives developed a working theory that Jackson and Hall fired on each other, but they did not rule out charging others for their roles in the fight or for concealing evidence.

Does anyone who was there that night or who knew Johnny Jackson have details that could clarify what happened in the parking lot?