But it isn't clear whether the U.S. Embassies were told of the Ranbaxy investigation or any potential adulteration of its ARVs. A spokesman at the Office of Global Health Affairs, a division of the Department of Health and Human Services, thought the FDA might have sent out an alert. But the spokesman at the FDA had never heard of that alert, adding, "FDA's only public comment at this time is to acknowledge that Ranbaxy is under investigation."