TAYLOR, Texas -- The FBI is looking into a woman's claims of sexual abuse at the T. Don Hutto Residential Center in Taylor after Immigration and Customs Enforcement, or ICE, said it investigated the claim and didn't find evidence to support it.

"ICE and (the) Williamson Sheriff’s Department concluded that the information provided by the detainee could not be corroborated and the case lacked evidence to pursue any further action," ICE spokeswoman Nina Pruneda said.

The residential center is an immigration detention center. It's overseen by ICE but operated by a private company, CoreCivic.

Claudia Muñoz with the immigration rights advocacy group, Grassroots Leadership, says she has heard from several women who claim sexual misconduct by guards.

"We see an agency that is reckless, where there is no accountability," she said. "When there is an agency that can actually have accountability for them like Williamson County, they chose not to act and they take (ICE's) side."

The Williamson County Sheriff's Office said Monday that federal investigators took over the case a week ago.