TEMPE, Ariz. -- A Tempe teenager accused of having an improvised explosive device in his bedroom in his family's home has pleaded not guilty.
Joshua Prater, 18, entered the plea Thursday to a charge of misconduct involving weapons. He had been arrested May 7.
The Marcos de Niza High school student was arraigned in Maricopa County Superior Court.
Police have said a cleaning woman found the device inside the home and took it to a fire station. Firefighters notified police, and the bomb squad responded and disabled the device.