A 76-year-old man is being held on bond for separate sexual incidents on the CTA Orange Line.
William Papagianis is charged with aggravated criminal sexual abuse and public indecency.
Prosecutors say he fondled a 15-year-old girl while riding the train, earlier this month.
Then on Monday, he was arrested at an Orange Line stop after a 17-year-girl accused him of exposing himself.
Papagianis kept shouting the word “lies” during his court appearance Tuesday.
He’s being held on one $1 million bond.