Joel Planas, 34, was fatally shot on December 18, 2016, after an altercation on a sidewalk in Chicago. The shooting happened just before 1 a.m.; Planas was struck in the abdomen during a fight with another individual and later died of his wounds.

Planas’s death came at a time when Chicago was enduring a sharp rise in violence. The city had recorded more than 691 fatal shootings and over 4,200 people shot during 2016, with homicides on track to top 750 by year’s end. His killing followed a brief four-day stretch without a fatal shooting, interrupting that short lull.

If anyone witnessed the early morning confrontation on December 18 or has information about the altercation, please share what was seen or heard.