Former Turing Pharmaceuticals CEO Martin Shkreli declined to speak at a congressional hearing, but he wasn’t shy about sharing his feelings about the experience on Twitter.

Shkreli appeared Thursday morning before a House Oversight and Government Reform hearing on ''Developments in the Prescription Drug Market Oversight,” but declined to testify, invoking his Fifth Amendment right against self-incrimination.

At one point during the hearing, Shkreli tells Rep. Trey Gowdy, R-S.C., “I intend to follow the advice of my counsel, not yours.”

He revealed on Twitter what he really thought about the government officials  before whom he appeared.

When a reporter asked about his voting record, Shkrelil responded succinctly.

Shkreli sparked outrage last September after raising the price of Daraprim, a medication used to treat infections in those with HIV and cancer, by 5,000 percent. The medication, which cost $13.50 per pill before Shrkreli’s company acquired it, now costs $750 per pill. Some patients take the drug daily for years.

His business practices were investigated and Shkreli was arrested in December by the FBI for his alleged part in a securities fraud scheme. The same month, Shkreli’s drug company, KaloBio, filed for bankruptcy.

Shkreli has maintained his innocence.

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