State police say a principal in the Knoch School District knew about allegations of child sexual abuse and didn't report them. Troopers say 49-year-old Gregory Mandalas, who works at Knoch Primary School, is a mandated reporter. He is now facing criminal charges.District solicitor Tom Breth told Pittsburgh's Action News 4 that the district is aware of the situation and that Mandalas has been put on administrative leave."We looked at the affidavit of probable cause this afternoon, most importantly to determine if there was a South Butler, Knoch student involved," Berth said. "The school district's been assured there is no Knoch School District student involved. This is unrelated to a student at the school district."The district's website states Mandalas has been the principal at the Primary School since December 2016. Prior to coming to Knoch School District, he served as a principal for the Karns City Area School District. According to the police report, Mandalas' 19-year-old son, Matthew Mandalas, is accused of sexually abusing a 6-year-old girl. Police say the victim's parents reached out to Gregory Mandalas on several occasions to make him aware of the abuse. Since he is a principal, he is a mandated reporter, according to law.Pittsburgh’s Action News 4 talked to Matthew Mandalas' attorney, Casey White, about his client's case. He said the alleged victim is a relative, and the alleged incident happened around Christmas of 2021.“I am shocked that they filed charges against Gregory Mandalas, essentially they want him to report suspected child abuse on his own son to authorities,” Casey White said.White said mandated reporters are for adults in certain professions such as health care or education.“What the attorney general's office is essentially doing is pitting his son against his father within a home and it concerns me about the sanctity of the home. That's not why the law was written, in my opinion, but obviously, that is going to be up for a judge to decide,” White said. State police in Butler County held a news conference on Tuesday morning to address the charge filed against Mandalas.There, Trooper Bertha Cazy said it's important for mandated reporters to report suspected abuse both at their professions, and in their personal life.Pittsburgh's Action News 4 asked why the charges against Gregory Mandalas came months after his son was charged."The delay is in order to allow investigators to do a thorough investigation," Cazy said.Online court records show Gregory Mandalas has a court date scheduled for late June.