Bizzell said school resource officer Todd Fair admitted to sending the pictures to a student at West Johnston High School, where Fair had been assigned. He was hired back in September of 2000.
The Johnston County Sheriff's Office released a statement saying Fair's conduct was "unbecoming of a law enforcement officer."
The sheriff's office would not say exactly what was in the photographs.
"I just really hate that this is happening to our school," West Johnston High School senior Kelli Carroll said.
Carroll says she never personally felt uncomfortable around Fair, but after hearing about what happened, she says she's glad he's gone.
"His job was to protect all of us and I mean it is creepy to think that the cop of your school was sending inappropriate pictures to somebody that was probably sitting in math class with you," Carroll said.
Parents also say they are shocked by the news.
Parent Beverly Warren says she met Fair earlier this year when she dealt with him in an unrelated incident at the school involving her 15-year-old son.
"I'm very upset," Warren said. "I really thought a lot of him. He was very helpful, very friendly. I mean this just; I mean this was very shocking to me. It hurts me to know that something like that could have taken place."
In the meantime, the district attorney says she has asked the SBI to investigate.
It is still unclear if Fair will face any criminal charges.