An elevated train derailed on the southeast side of Chicago, causing minor injuries.

Chicago Fire Department spokesman Larry Langford says a Green Line train run by the Chicago Transit Authority went off the rail about noon Saturday. He says 14 people were hospitalized with minor injuries.

CTA spokeswoman Katelyn Thrall says it isn't clear what caused the derailment and an investigation is being done.

Fire officials helped evacuate about 42 people from the train.