Edward Klein, 79, of West Allis, Wisconsin, is being held without bond in the DuPage County Jail, according to the DuPage County sheriff's office.
A retired West Allis law enforcement officer has been charged with shooting an Amtrak conductor in Naperville, Illinois, on Tuesday. Klein is charged with one count of attempt murder and one count of aggravated battery with a firearm.
Klein alledgedly shot Amtrak conductor Mike Case of Homewood at the Naperville Amtrak station. The train stopped at the downtown Naperville train station about 4:45 p.m. and some passengers got off.
The man was in his 70s, who got shot, but it is unknown about the identity of the person who shot the old train conductor, in fact, both of the person's actual identity is upheld by the police authorities.
Other passengers restrained the gunman until police arrived.
Prosecutors say Klein told police he became angry when he couldn't disembark in Naperville, outside Chicago, and shot the conductor.
He was taken into custody and a handgun was recovered, police said. He remained in intensive care as of Friday morning. DuPage County State's Attorney Robert B. Berlin said.
Klein was due back in court on June 12.
State's attorney's office spokesman Paul Darrah said Klein formerly worked for the Federal Protective Services, a branch of Homeland Security that proved security for federal facilities.