Tae Johnson, the acting leader of embattled federal agency, U.S. Immigration and Customs Enforcement (ICE), will leave his post at the end of the month, setting up yet another high-level vacancy within the Department of Homeland Security.

Johnson's forthcoming departure was first reported by the Washington Examiner in late April.

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“As ICE’s leader since 2021, he has overseen some of the nation’s most critical investigations, including Operation Stolen Promise to combat the new threats related to counterfeit COVID-19 vaccines and treatments, and Operation Blue Lotus to curtail the flow of fentanyl smuggled into the United States from Mexico," DHS Secretary Alejandro Mayorkas said in a statement issued Monday afternoon.

ICE has struggled to find a permanent leader since President Joe Biden took office in January 2021. Biden nominated Harris County, Texas, Sheriff Ed Gonzalez, but later withdrew his pick.

Johnson is a career law enforcement official who has worked as deputy director carrying out the duties of acting director for nearly two and a half years.

This story is developing and will be updated.