The FBI is now potentially involving themselves in an unsolved case after a nonverbal, autistic teen was assaulted at his high school, The New York Post reports.

On March 9th, an autistic 17-year-old returned home from Clark High School with a swastika carved into the skin on his back. Distraught with seeing the hate symbol and noticing her son’s service dog’s equipment bag had been tampered with, the concerned mother immediately notified authorities.

The victim’s mother believes that the attack occurred for antisemitic reasons. “My son is the only student I know who wears a Kippah at the school,” she explained.

After an investigation by the Las Vegas Metropolitan Police Department has concluded, no arrests were made. Due to the school not having surveillance cameras in classrooms, locker rooms, and/or bathrooms, officers did not have any suspects. Without the culprit being found and unpunished, the victim’s mother is worried for her son’s safety, and has decided to pull the teen from the school.

“We are aware of the incident and are in regular contact with local authorities,” the FBI said in a statement. “If during the local investigation, information comes to light of a potential federal civil rights violation, the FBI is prepared to investigate.”