US Food and Drug Administration Commissioner Lester Crawford has announced his resignation effective immediately. The move comes as a surprise after he was finally confirmed to the post by the Senate just two months ago.
Crawford was previously agency deputy and acting commissioner before taking the top post.
Health and Human Services Secretary Mike Leavitt accepted Crawford's resignation .
According to the Associated Press, Dr. Andrew C. von Eschenbach has been tapped by President Bush as the temporary chief of the regulatory agency, saying that he will remain chief of the National Cancer Institute, the government's lead agency in researching cancer treatments, while running the FDA. Von Eschenbach gave no indication of whether he expected to be nominated as permanent chief.