BRIDGEPORT — A dance instructor was arrested on Tuesday and charged with having sexual contact with a 13-year-old earlier this year, police said.

John Sadowski, 26, of Fairfield, Sadowski faces charges that include risk of injury to a minor and fourth-degree sexual assault.

The investigation began when the girl's mother contacted police in April and, based on text-message exchanges she discovered, alleged that Sadowski had inappropriate contact he had with her daughter, police said.

Detectives determined that there had been "inappropriate sexual contact" between the girl and Sadowski, police said.