An after-school basketball coach was charged in New York State Supreme Court on Wednesday with sexually abusing two 8-year-old girls while working at a Manhattan school, prosecutors said.

Channing Parker, 22, was an employee at Kids Creative, a nonprofit group that organizes after-school programming in New York City, and since November, had been placed at the Ideal School of Manhattan on the Upper West Side, a private school that focuses on educating both special needs and general education children in the same classrooms.

In statements Mr. Parker made to police detectives, which were disclosed by prosecutors, he described taking one of the girls into a single occupancy bathroom on March 10 and forcing her to engage in oral sex.

The child told her mother about the assault, prosecutors said, and Mr. Parker was arrested the next day. The Ideal School notified parents of the arrest, at which point another child said Mr. Parker had assaulted her as well. Mr. Parker had taken her into the same bathroom on March 8, prosecutors said.