USADA head received death threats during Armstrong investigation

January 8, 2013 3:52 PM

The official who exposed the illegal doping of Lance Armstrong says he received death threats and witnesses were intimidated during his two-year investigation. Scott Pelley spoke with Travis Tygart, the head of the U.S. Anti-Doping Agency, which polices U.S. Olympic Sports, in his first interview on the investigation.

USADA head: I got death threats during Armstrong probe

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