One person was killed while another victim of a shooting remains in critical condition, Bolingbrook police captain Anthony Columbus said. A third victim was discharged from the hospital.
The three victims were WeatherTech employees, police said in a press release.
The suspect in the shooting, identified as 27-year-old Charles C. McKnight Jr., was with a temporary employment agency and had been assigned to the WeatherTech facility earlier this month, police said.
CNN has been unable to identify a McKnight lawyer.
Bolingbrook police were sent to the facility around 6:25 a.m. local time, according to police. The suspect was arrested about three hours later, authorities said.
A preliminary investigation indicated McKnight confronted other employees towards the end of the night shift after allegedly stealing a watch and a pistol-tipped wallet from two co-workers, police said.
During the confrontation an argument took place and the suspect pulled out a gun and shot three co-workers, authorities said.
Authorities do not believe the shooting was premeditated.
At the time of the arrest, police recovered items related to the robbery at McKnight and also found a handgun, according to the statement.
CNN has contacted WeatherTech to comment. The company manufactures automotive products, including carpets.
The town of Bolingbrook is a suburb southwest of Chicago, approximately 30 miles from downtown.
“Today, our community has been shattered by another act of senseless gun violence,” Deputy Bill Foster, who represents the 11th district of the Illinois Congress, said in a statement.
“Words cannot express the lovelessness that victims and their families are feeling right now. My thoughts are with them during these difficult times … No one should worry about random gun violence while “He is still living his normal life, and we cannot accept that as a new reality,” he added.
Police say he is working with Will County State Attorney on formal charges.
Saturday’s deadly incident comes after a controversial week in Washington over legislation governing gun regulations. President Biden signed a bipartisan gun safety law, the first major in decades, while the Supreme Court repealed a New York gun law that imposes restrictions on carrying a concealed handgun outside the home, marking the wider expansion of arms rights in a decade.
These advances follow the heels of other armed violence, including a massacre at an elementary school in Uvalde, Texas.
CNN’s Hannah Sarisohn contributed to this report.