A soccer coach on Long Island has been arrested for allegedly raping a 16-year-old player on the team on two occasions, according to authorities.

Nassau County police on Thursday said Sean Johnsen, 35, had "inappropriate contact with a female player" last summer. The alleged crime occurred just days apart on Aug. 17, and on Aug. 20, police said.

The Valley Stream coach is a coach of the Franklin Square Raiders, a Nassau County soccer club team where the players' ages range from 14 to 19 years old, according to police and the district attorney. The president of the club offered no comment on Friday.

Johnsen pleaded not guilty to two counts of rape, two counts of criminal sexual act and endangering the welfare of a child, according to police. He did not respond to questions as he was on his way to face a judge virtually at police headquarters.

While prosecutors believe Johnsen may have victimized others, his lawyer responded by saying, "my client has an outstanding reputation as a coach, teacher, mentor, counselor, and categorically denies all the accusations of inappropriate behavior."

In addition to coaching, Johnsen was a math teacher at Woodbury's Fusion academy, a private school. An office manager at the school said he had been fired from that part-time position on Friday.

Anyone with information about the incident or feel they may have been a victim of a similar crime is asked to contact Nassau County Special Victims at (516) 573-4022, police said.