CHICAGO (CBS) — A 52-year-old man was attacked while walking in Lakeview on Monday morning, as a group of robbers stabbed him and sprayed him with a chemical before taking his property.

Police said the victim was walking near Belmont and Sheffield avenues around 7:50 a.m., when a group of two or three men approached him, less than a block from the CTA Red Line station at Belmont.

READ MORE: Judge Bars Chicago Police Union President John Catanzara From Encouraging Officers To Defy City's Vaccine Mandate

The robbers sprayed him with a “chemical irritant,” and stabbed him in the back and arm. The men then stole his property and ran off, according to police.

READ MORE: Chicago Weather: Chilly Tonight, Sunny And Cool Weekend

The victim was taken to Advocate Illinois Masonic Medical Center in serious condition.

Police did not have a description of the robbers, and no one was in custody Monday morning.

MORE NEWS: Sky Cruise To 86-50 Win Over Mercury, Take 2-1 Lead In WNBA Finals

Area North detectives are investigating.