Now that former Subway pitchman Jared Fogle has agreed to plead guilty to allegations that he paid for sex with girls as young as 16, and received child pornography, he could face years in prison.

As Fogle waits for his next court date, where he will formally enter a plea, more details about what led to this arrest are coming out.

One of the informants who helped lead the FBI to Fogle lives in the Tampa Bay area.

Rochelle Herman-Walrond, a former radio host, said she met him while he was making an appearance in 2007 in Sarasota.

While the two were at a local school, Herman said he made inappropriate comments about young girls.

“We were having a conversation and were talking about the kids, and Jared said how hot the middle schools girls were,” said Herman. “I didn’t think I heard him correctly.”

Disturbed, Herman went to the FBI. However, the two remained in contact. Herman kept talking to him, trying to get more information.

“He trusted me instantly,” said Herman. “He felt there was a confidence there. He was mistaken. I saw it for what it was. I was really looking out for the children.“

Herman said she worked undercover and recorded her conversations with Fogle. That’s when she learned about his relationships with minors.

“Throughout the course of time, he’d tell me the younger, the better,” said Herman. “He really was preference to around the age of 11. But, both boys and girls, gender didn’t matter.”

Herman said Fogle even asked her if she’d install hidden cameras in her own children’s rooms for him to watch them.

“He’s a monster, that’s what he is,” said Herman. “I had to act like I was into the same things.”

Her work eventually paid off. Using Herman’s information, a federal investigation into Fogle was launched. He now faces years behind bars.

Herman said she’s relieved. She’s now hoping her actions inspire others to speak up when they feel like something is wrong.

“Trust your gut,” said Herman. “Open your eyes and take action. Be an active participant.”

Fogle, 37, said he’ll plead guilty to possessing and distributing child porn and traveling across state lines to have sex with at least two teenage girls.

Under the plea deal, the government will recommend less than 13 years behind bars.

Fogle will also pay $100,000 each to the victims who were secretly photographed or who he paid for sex.

Subway has cut all ties with him.