The Obama administration warned Mylan multiple times that it had to give Medicaid more money to cover a higher rebate for the EpiPen.

The finding comes amid anger on Capitol Hill over Mylan’s 400 percent price increase of the EpiPen, which costs about $600. Sens. Ron Wyden, D-Ore., and Orrin Hatch, R-Utah, asked the Centers for Medicare and Medicaid Services to investigate whether Mylan was bilking Medicaid’s drug rebate program.

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