Federal authorities arrested a Saudi national employed at OpenAI and charged him with planting a recording device in a company’s executive conference room, the Department of Justice announced Tuesday.

On or around Sept. 30, OpenAI discovered a sophisticated recording device inserted into the back of a television in an executive conference room located in one of its San Francisco offices. The company determined that the device was installed approximately a couple days prior, concealed in toilet paper. The contents of the device were encrypted, according to the DOJ.

The Department of Justice said in a news release that the employee, Abdulrahman Alfozan, 35, was arrested Friday and appeared in federal court Tuesday. OpenAI confirmed the incident on social media and said that it was supporting the FBI’s investigation.

“We used our models to understand the device and where it had come from, identifying that a specific employee had planted it a few days earlier,” OpenAI said in its statement. “At this time, we have no indications of this individual inappropriately accessing or exfiltrating model weights, source code, or customer data.”