Endrick Torres, 33, works with a traveling camp called Big Bird's Playhouse on Staten Island, according to sources.
Torres is accusing of sexually assaulting the girl while the campers were on a field trip on Tuesday, August 13.
The 10-year-old victim reported what happened to her mother after returning home. Her mom called police.
Torres was arrested on child sex assault charges on Wednesday and released on $15,000 bond. He is due back in court next week.
