Washington — The head of the Food and Drug Administration's drug center abruptly resigned Sunday after federal officials began reviewing "serious concerns about his personal conduct," according to a government spokesperson.

Dr. George Tidmarsh, who was named to the FDA post in July, was placed on leave Friday after officials in the Department of Health and Human Services' Office of General Counsel were notified of the issues, HHS press secretary Emily Hilliard said in an email. Tidmarsh then resigned Sunday morning.

"Secretary Kennedy expects the highest ethical standards from all individuals serving under his leadership and remains committed to full transparency," Hilliard said.

The departure came the same day that a drugmaker connected to one of Tidmarsh's former business associates

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