The stabbing occurred about 7:30 a.m. in the 7400 block of North Ridge Avenue, Fire Media Affairs spokesman Will Knight said.
Two men were taken to Saint Francis Hospital in Evanston, a 31-year-old man in critical condition and a 32-year-old man in good condition, Knight said. A 32-year-old man was taken in critical condition to Advocate Illinois Masonic Medical Center.
The suspect, who is one of the men stabbed, is in critical condition and in custody, police said.
(Source: Sun-Times Media Wire - Copyright Chicago Sun-Times 2013.)