4 killed in shooting on Chicago public transit train

Four people were killed in a shooting on a Chicago Transit Authority train early Monday morning.

The Forest Park Police Department received a 911 call around 5:27 a.m. about victims with gunshot wounds on a train at the Blue Line station at 711 Desplaines Avenue, Forest Park, police said in a Facebook post.

Police found four victims with gunshot wounds on the scene, police said. Three were pronounced dead on the scene and the fourth victim was taken to Loyola University Medical Center where they died.

Law enforcement did not identify any of the victims.

The suspect was later found on a Pink Line train through video surveillance and taken into custody, police said, adding that the shooting appears to be an isolated incident and poses no immediate threat to the community.

The Chicago Transit Authority (CTA) called the shooting a "heinous and egregious act of violence" that should have never happened on a public train.

"As soon as this matter was reported, CTA immediately deployed resources to assist the Forest Park Police in their investigation into the matter, including review of all possible security camera footage, which proved to be vital in aiding local enforcement," the CTA said.

The CTA said it will continue to work with local police to investigate the shooting.