An Overland Park pediatric physician pleaded guilty in federal court Monday to using concealed video cameras to secretly record 13 child victims for the purpose of producing child pornography over a three-year period from Oct. 4, 2020, to Oct. 28, 2023.

Brian Michael Aalbers, 50, of Kansas City, Missouri, pleaded guilty before U.S. Magistrate Judge Lajuana M. Counts to 13 counts of attempting to produce child pornography and one count of possessing child pornography, according to a news release from the United States Attorney’s Office for the Western District of Missouri.

Aalbers, a pediatric neurologist at Overland Park Regional Hospital, remains in federal custody without bond.

Concerns were received by both the FBI and the U.S. Attorney’s Office regarding the potential victimization of patients of Aalbers’ pediatric practice. During the investigation, it was determined there was no evidence to indicate any current or former patients were victimized by Aalbers. To protect and maintain the privacy of Aalbers’ victims, no additional information regarding the victims will be released, the office said in a news release.

According to the plea agreement, police officers investigated a report regarding concealed video cameras that had been found on Oct. 28, 2023. A witness later contacted officers to report that Aalbers was sending suicidal text messages. Lenexa police officers located Aalbers and took him to a local hospital to obtain voluntary mental health treatment. The hospital took possession of two laptop computers, two iPad tablets and a cellphone that were inside a backpack Aalbers brought with him when he entered the facility.

Investigators obtained search warrants for those devices, as well as other cameras and electronic devices owned by Aalbers. Investigators found more than 50,000 video files associated with the hidden video cameras used by Aalbers, including more than 1,000 videos that contained pornographic depictions of the 13 child victims.

Investigators also obtained a search warrant for Aalbers’ iCloud account, which contained 1,000 additional images and 163 additional videos of child pornography, which included videos of the identified child victims that had been produced by Aalbers.

Under the terms of the plea agreement, the government and Aalbers are jointly requesting a sentence of at least 20 years, but no more than 30 years, in federal prison without parole. The sentencing of the defendant will be determined by the court based on the advisory sentencing guidelines and other statutory factors. A sentencing hearing will be scheduled after the completion of a presentence investigation by the United States Probation Office.