(AP) — A Hawaiʻi public school teacher pleaded not guilty Thursday to distributing child pornography, which prosecutors say included videos of him having sex with a 13-year-old student.

Alden Bunag participated in his arraignment by phone from the Honolulu Federal Detention Center, where he is being held.

Assistant Federal Defender Jacquelyn Esser entered the not guilty plea on behalf of Bunag.

According to a criminal complaint, Bunag, 33 worked as a substitute teacher at multiple schools and sent videos of himself having sex with a boy during school lunch breaks to a teacher in Philadelphia. He distributed child pornography between November 2019 and October 2021, prosecutors said.

According to the complaint, FBI agents said Bunag told them he had sex multiple times with a then-13-year-old boy who was his student and sent a video recording to the Philadelphia teacher and others.

Authorities asked that any other possible victims contact the FBI in Honolulu.

Bunag’s trial is scheduled for August.