A 32-year-old man was gunned down early Sunday outside an unofficial Lollapalooza after party at a nightclub in downtown Chicago.

According to DNAinfo Chicago, Martrell Ross was found fatally shot in an alley near Bodi nightclub about 3:50 a.m. A second gunshot victim, a 21-year-old man, was also found on a sidewalk nearby. The 21-year-old man was taken to an area hospital in serious condition.

Bodi — which was open until 5 a.m. — was holding an unofficial Lollapalooza after party at the time of the shooting, slated to be hosted by rapper Nas. Witnesses told WGN the men had been arguing inside the nightclub prior to the shooting.

Responding police officers saw a man fleeing the scene on foot and fired at but did not strike him, according to the Chicago Sun-Times.

The two men wounded near Bodi were among four people killed and 22 wounded over the course of the weekend in Chicago, which has been back in the spotlight for its violent reputation since more than 60 people were shot over the Fourth of July holiday weekend.

Despite recent criticism over how the city has responded to the surge in shootings, Chicago Police Superintendent Garry McCarthy defended his department at a Friday City Council hearing, noting progress the city has made and blaming the media for “a steady drumbeat of shootings, shootings, shootings, murder, murder, murder,” DNAinfo’s Ted Cox reported.