Former teacher from Santa Ana gets 17½ years in prison after hiding cameras in an Irvine H.S. bathroom

SANTA ANA, California – A former teacher at a high school in Orange County who secretly installed hidden cameras in bathrooms at the school and elsewhere and, during a three-year span, viewed and downloaded hundreds of images – including of children under the age of 12 – using the restroom, was sentenced today to 210 months in federal prison for possessing child sexual abuse material (CSAM), according to the U.S. Department of Justice.

Siu Kong Sit, 38, of Rowland Heights, who previously lived in Santa Ana, was sentenced by United States District Judge John W. Holcomb, who ordered Sit to be placed on lifetime supervised release following his eventual release from prison and scheduled a restitution hearing for November 8 in this case.

Sit pleaded guilty on March 29 to one count of possession of child pornography.

“This defendant was every parent’s nightmare – rather than care for the safety and well-being of students, he exploited them in the most abhorrent way,” said United States Attorney Martin Estrada. “It is important that we send a strong message of zero tolerance for those who take advantage of children. My office will continue to prosecute offenders who prey on our youth to the fullest extent allowed by law.”

According to Sit’s plea agreement, beginning in at least February 2020, when he was employed as a teacher at Beckman High School in Irvine, Sit began secretly installing hidden cameras in restrooms located on campus. After installing the cameras, Sit regularly reviewed the videos captured by the cameras and downloaded the videos that were of interest to him.

In May 2022, while serving as the high school robotics team coach, Sit placed a hidden camera in the restroom of a hotel room where minor students on the robotics team were staying during a robotics tournament in Texas. From 2020 to 2023, Sit viewed and downloaded hundreds of images of children and adults, in various states of undress, using restrooms.

In February 2023, after the cameras had been discovered, law enforcement seized several digital devices from Sit’s home. Sit owned and was the sole user of all these devices. Officers also seized two external storage drives from the cameras that Sit had secretly installed at Beckman High School.

A forensic review of the various digital devices identified dozens of images and videos of child pornography, including images and videos that Sit had recorded himself of children using restrooms in various states of undress. The victims that Sit recorded without their consent were under the age of 18, and some of the victims were under the age of 12.

A search of a Sit-owned hard drive resulted in the seizure of at least 22 images and one video of CSAM, including several depicting a toddler engaged in sexual activity. The search of a separate Sit-owned hard drive contained at least 150 images and four videos of CSAM.

Sit admitted in his plea agreement to knowingly possessing images and videos of minors under the age of 12 engaging in sexual conduct.

The Orange County District Attorney’s Office is pursuing criminal charges against Sit in Orange County Superior Court concerning the adult victims in the hidden videos matter. The charges filed in state court concerning Sit’s minor victims was dismissed so the federal case could proceed.

Homeland Security Investigations and the Irvine Police Department investigated this matter.

Assistant United States Attorney Melissa S. Rabbani of the Santa Ana Branch Office prosecuted this case.