Subway announced Friday that an internal investigation confirmed that the company did receive a complaint about spokesperson Jared Fogle. The complaint concerned comments made by Fogle which eventually led to a federal investigation lasting four years. He has allegedly confessed to using underage prostitutes and has since plead guilty.

Florida journalist Rochelle Herman-Walrond worked with the FBI for four years documenting her conversations with Fogle who shared details with her about his preferences for the underaged.

With the internal investigation complete, Subway said in a statement that they regret the complaint was “not properly escalated or acted upon,” nor did the fast food chain agree to elaborate further on the content of the complaint. The complaint was simply acknowledged.

The material reviewed by the investigators consists of online comments and interviews with past and present Subway employees. The investigation yielded no further complaints about Fogle in the context of commercial intercourse with minors.

Herman-Walrond’s account has not been confirmed by the FBI so far. However, she recently said in a local TV interview that Fogle “told me how hot middle school girls were… Gender didn’t make a difference to him, the younger the better.”

Fogle’s plea agreement chronicles the accounts of witnesses across three states that show the former spokesman “repeatedly discussed with them his interest in engaging in commercial sex acts with minors or stated that he has done so in the past.”

Jared is expected to pay $1.4 million in restitution and is expected to spend five to 20 years in prison if found guilty.