Demarcus Partee, 27, was killed in a mass shooting after a private party at BeeCee’s Place, an event hall on Desoto Avenue in Clarksdale, Mississippi. The shooting happened in the parking lot at about 1:30 a.m. on November 17, 2018; Partee died of his injuries and three other people were wounded but survived.

Investigators recovered more than 100 shell casings and described the incident as stemming from a gang-related dispute. Authorities identified 21-year-old Christopher Magsby of Friars Point as a person of interest; he was arrested on two counts of aggravated assault for allegedly shooting two of the wounded victims and was later released on an $80,000 bond. At the time of those charges the homicide investigation into Partee’s death was still active and police said they hoped for additional arrests.

If anyone was at the event or has information about the altercation in the parking lot, please share what you know with investigators.