Carl Fennell, 73, was indicted by a grand jury Aug. 6.

The Dover Police Department has charged a retired Capital School District teacher with 10 counts of unlawful sexual intercourse, department spokesman Master Cpl. Mark Hoffman announced Wednesday.

The individual is identified as 73-year-old Carl Fennell, Hoffman said.

According to the police, Dover detectives were notified July 11 by a 43-year-old woman that Fennell had sexually abused her between July 1989 and May 1990.

The woman, who was 14 at the time, said Fennell would take her to the courts at Delaware Technical Community College for tennis lessons. After each practice session, he would have her perform sexual acts on him in a vehicle.

After the woman made her statement, detectives contacted Fennell who agreed to an interview. According to Hoffman, during the session Fennell admitted to mentoring the victim and also admitted to committing at least 10 but no more than 10 sexual acts with her while she was 14 and 15 years old.

Fennell was an employee of the Capital School District from 1969 until 2001.

Fennell was indicted Aug. 6 by a grand jury on 10 counts of first-degree unlawful sexual intercourse. He was formally charged Aug. 8 after surrendering to Dover police, Hoffman said.

After his retirement from the Capital School District, Fennell found other work in the tennis field.

According to the Delaware State University website, he was a member of the school’s women’s tennis team staff beginning in September 2007. Working as a volunteer assistant coach he was in charge of tactical and technical observations.

The College Tennis Online website called Fennell “one of Delaware’s most highly regarded tennis teachers,” who taught the sport to disadvantaged youngsters.

He was named to the Delaware Afro-American Sports Hall of Fame in 2015.