Three men and a woman were shot early Thursday morning on the Far South Side, near Altgeld Gardens.
Police arrived at the 600 block of East 133rd Street shortly after 3:15 a.m. on a report of a shooting.
Shots were fired outside when a group of men was present.
Two men, aged 21 and 31, were shot and transferred in critical condition. A 29-year-old man was self-transported and then transferred to the University of Chicago Medical Center in critical condition.
A 29-year-old woman was self-transported in stable condition.