Of those victims, two men and one woman died on Chicago's South Side. A 31-year-old man was shot on the 1100-block of West 69th Street and died at a hospital. A woman, 21, also died at a hospital after being shot in the 3900-block of West 19th Street.
Another fatal shooting happened just before 1:30 a.m. Saturday in the 6400-block of South Langley Avenue. A 52-year-old man was shot in the neck. Police say he died at the scene.
No one was in custody later Saturday morning.
Accroding to the Associated Press, police statistics released this week showed a 60 percent rise in homicides in Chicago over the first three months of the year.
(The Associated Press contributed to this report.)