TOPEKA, Kan. (AP) — A Topeka teenager known for videotaping police officers while they work has pleaded not guilty to three recent citations.

The Topeka Capital-Journal reports that 17-year-old Addison Mikkelson has videotaped law enforcement officers in Topeka doing their jobs in recent months. He also posts the videos online, including one he took of Topeka police officers arresting him for crossing against a red light.

He pleaded not guilty to that charge Monday, along with two others he picked up Friday related to video recording while he was driving.

In the clips, Mikkelson says that he is exercising his First Amendment rights.

Mikkelson’s trial is set for April 7.