CHICAGO (CBS) – Police officers shot and killed a man suspected in a triple murder earlier in the day in the western suburb of Berwyn on Wednesday evening.

Berwyn police said officers responded to the 1800 block of Home Avenue around 11:38 p.m. on a report of a man with a gun.

Officers spotted the suspect running and forcing his way into a home a block away in the 1800 block of Wenonah Avenue, where he shot two dogs, according to police. Officers then spotted him fleeing into a nearby yard in the 1800 block of Home Avenue.

Police ordered the man to stop, but he opened fire on the officers, who returned fire, killing him. The Cook County Coroner’s Office identified the man as 24-year-old John R. Lyons of Westchester.

No officers were injured in the shooting.

Police said initial reports indicated Lyons was wanted for a triple homicide earlier in the day in Mahomet State, near Champaign.

CBS affiliate WCIA-TV reports that three family members were shot Wednesday evening.

Around 9:40 p.m., officers were called to a home on South Riverside Court where they found three people suffering from gunshot wounds. One victim, 26-year-old Sara Mason, was pronounced dead at the scene. Two other people – 61-year-old Janis L. Mason and 23-year-old Caleb M. Mason – were taken to Carle Hospital, where they were pronounced dead.

Lyon’s connection to the three victims was not immediately clear.

The Champaign County Coroner’s Office, the Mahomet Police Department and the Illinois State Police investigated the triple homicide. The Illinois State Police Public Integrity Task Force investigated the police shooting in Berwyn.