A juvenile suspect was “removed from” Lancaster Country Day School and his cellphone was seized by investigators in August, Susquehanna Regional Police Department Detective Laurel Bair said Tuesday.

It’s the latest example of how the use of artificial intelligence to create or manipulate images with sexual content has become a concern, including within school settings.

U.S. law enforcement has been cracking down on graphic depictions of computer-generated children as well as manipulated photos of real ones. The Justice Department says it’s pursuing those who exploit AI tools and states are racing to enact laws to address the problem.

A new Pennsylvania state law that takes effect late next month explicitly criminalizes making or disseminating AI-generated child sexual abuse material.

And police in South Korea are on a seven-month push to combat explicit deepfake content, with tougher penalties, expanded use of undercover officers and increased regulation of social media. Concerns in South Korea deepened after unconfirmed lists of schools with victims spread earlier this year.

As part of the police investigation into what the Lancaster Country Day School describes as “disturbing AI generated photographs,” a search warrant was used this summer to obtain an iPhone 11 linked to a 15-year-old, according to court records. The records do not identify the teen.

A woman told police that her daughter said a fellow student had been “taking photographs of students and using Artificial Intelligence (AI) technology to portray the female juvenile students as being nude,” according to a probable cause affidavit used to apply for the search warrant.

Matt Micciche, then the head of the school, told police the school had received a complaint about the photos in November 2023 through the Safe2Say Something program but the suspect, identified by his initials, denied the allegations, according to Bair’s affidavit.

When some parents became aware of the photos in May, Bair wrote, they also learned that the “AI nude photographs” had been posted in a chat room.

Bair, leading the investigation because the suspect lives in the Susquehanna Regional Police Department’s territory, said there has been shock at the school “that this is even occurring and that it happened within their small community.” She declined to say how many girls had been shown in the images but added that more information about the case will likely be made public in the coming two weeks.

Erik Yabor, a spokesperson for Lancaster District Attorney Heather Adams, said Tuesday that Lancaster County prosecutors had no comment about the ongoing investigation.

A spokesperson for Attorney General Michelle Henry’s office said the agency was not able to talk about specific tips or reports made to the Safe2Say Something platform, which fields anonymous reports from students and others about safety threats.

“Generally speaking, our team intakes the tips and sends them to the respective law enforcement or school personnel for review,” Brett Hambright said. “We have confirmed that was done regarding the matter you inquired about.”

LNP in Lancaster reported that most of Lancaster Country Day’s high-school age students held a walkout on Friday, Nov. 8, marching around the campus and chanting, “Hear us. Acknowledge us. See us.” School was canceled on Monday.

LNP said the school indicated on Friday that it had “parted ways” with Micciche and that board president Angela Ang-Alhadeff had stepped down. The Associated Press left phone messages seeking comment with both of them on Tuesday. A letter addressed to the school community Monday by the Lancaster Country Day Board of Trustees said it was working to replace them and was “still in the process of finalizing the resolution to the case.”

“What we can say is that over the course of the past week the board was made aware of information that led us to the decision to resolve the matter,” the board wrote, including acting “in the best interests of the girls who have been impacted and in the best interest of the school long term.”

The school said counseling has been offered to students and the institution is reviewing reporting procedures, safety practices and other policies regarding student safety.