CAMBRIDGE, Mass. -- A Massachusetts grand jury indicted a Connecticut gymnastics coach on charges that he repeatedly raped one of his teenage students and sexually assaulted another student in the early 1990s.

Steven Infante, 51, of New Milford, was indicted by a Middlesex Grand Jury on Friday on one count of rape, one count of rape of a child and two counts of indecent assault and battery on a person over 14, according to the district attorney's office.

Prosecutors said Infante had a secret sexual relationship with a girl that began when she was 14 and did not end until she was 21. They said he paid for her to have an abortion when she was 17. Prosecutors also said he molested another student in the 1990s.

"We allege that the defendant, Steven Infante, took advantage of his position of authority to exert control over, manipulate, and sexually assault these young vulnerable girls," District Attorney Gerry Leone said in a statement. "We also allege that the defendant engaged in a pattern of 'grooming' the young victims in an effort to gradually make them more accepting of his escalating, inappropriate, and ultimately criminal sexual contact with them."

The alleged grooming included gifts, alcohol, excessive physical contact and flirtation, according to Leone.

Infante appeared in court Wednesday in Cambridge, Mass.

He used to own Olympia Gymnastics in Brookfield and currently runs a company that holds overnight gymnastics camps.

Another gymnastics coach, Stephen DiTullio, 53, of Littleton, was also indicted on a charge of perjury in connection with his grand jury testimony during the course of the investigation. DiTullio was arraigned Tuesday and released on personal recognizance.