The three were wounded around 12:30 a.m. near a Taco Bell in the 1100-block of West Addison near Wrigley Field. The injuries were not life threatening.
It's unknown what sparked the violence, but police are looking at whether a fight in a nearby bar is related.
Two 19-year-old men and a 20-year-old man were injured. One teen was shot in both legs and an elbow, while the other 19-year-old suffered a graze wound to the ankle, according to a News Affairs statement. The 20-year-old was shot in the ankle. All three victims were transported to Advocate Illinois Masonic Medical Center and were listed in good condition, according to the statement.
The gunman fled the scene and was not in custody as of 4 a.m.
A fight that erupted at the nearby Wild Hare club, 3530 N. Clark St, shortly before the shooting may have been connected to it, according to the lieutenant. At 11:36 p.m. police called a 10-1, an emergency call for immediate assistance, for the disturbance inside the club, where one man was stabbed in the hand and also hit over the head with a chair, according to the source.
The man stabbed did not want to cooperate with police, the lieutenant said.
Belmont Area detectives say they are investigating.
The Sun-Times Media Wire contributed to this report.