Two masked gunmen burst into a party and opened fire, wounding six men, police said.
About 100 people were attending the party early Sunday in a house on the city's South Side when the gunmen kicked down a door, police spokeswoman Monique Bond said.
The six victims were taken to hospitals. All were listed in good or stable condition.
No arrests have been made.
Investigators do not have a description of the gunmen because the attackers were masked, Bond said. Police did not know if the shooters targeted specific individuals or if they fired randomly.