Defense Secretary Lloyd Austin was admitted to a critical care unit Sunday evening after being hospitalized earlier for a bladder issue, top doctors at Walter Reed National Military Medical Center said.

The change in care was prompted after he underwent tests and evaluations for the “emergent bladder issue” that prompted his hospitalization Sunday afternoon, they said in a statement.

He transferred his duties to Deputy Defense Secretary Kathleen Hicks at about 4:55 p.m. Sunday, and the White House, Joint Chiefs and Congress have been notified, Pentagon Press Sec Maj. Gen. Pat Ryder said.

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