Washington (CNN) The Department of Health and Human Services received more than 4,500 complaints of sexual abuse against unaccompanied minors from 2014-2018, according to internal agency documents released Tuesday by Florida Democratic Rep. Ted Deutch.

In addition,1,303 complaints were reported to the Justice Department during that same time frame, according to the documents.

Deutch addressed the documents during a high-profile House hearing Tuesday on the Trump administration's "zero tolerance" policy that resulted in thousands of immigrant children being separated from their parents.

He said that the documents "demonstrate over the past three years, there have been 154 staff on unaccompanied minor, let me repeat that, staff on unaccompanied minor allegations of sexual assault."

"This works out on average to one sexual assault by HHS staff on unaccompanied minor per week," he added.

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