Chicago: Shooting on passenger train, 4 people killed

Chicago: 4 passengers were killed and many were injured in a shooting inside a passenger train in the US state of Chicago.

According to the foreign news agency, the shooting incident in Chicago happened inside the train. Police teams immediately reached the spot on information.

The police arrested the attacker. An investigation into the train firing has been launched.

According to the police, no clear information about the accused could be obtained yet. The facts will emerge after the investigation.