PHOENIX (AP) - A substitute teacher at a Phoenix high school has pleaded not guilty to multiple charges of sexual exploitation of a minor.
A Maricopa County Superior Court spokesman said 50-year-old Greg Parr entered his plea Monday.
Phoenix police said a flash drive found in a classroom at Cortez High was found to contain child pornography.
School administrators accessed the device in an attempt to determine its owner and said there appeared to be images of young children engaged in sexual acts.
School officials contacted police and turned over the USB drive.