Dr. Vinay Prasad, a controversial critic of the US Food and Drug Administration who took a top role at the regulatory agency in May, has returned to his job weeks after resigning amid pressure from the White House and right-wing activist Laura Loomer.

At the FDA’s request, Dr. Vinay Prasad is resuming leadership of the Center for Biologics Evaluation and Research,” Health and Human Services spokesman Andrew Nixon told STAT on Saturday. It is not clear whether Prasad will also still serve as the FDA’s chief medical and scientific officer.