The United States Olympic Committee (USOC) has announced that its chief executive has resigned due to health concerns, following the abuse scandal involving team physician Larry Nassar.
Scott Blackmun, who had been USOC's head since 2010, has said his diagnosis of prostate cancer meant he would not travel to the Winter Olympics in Pyeongchang, South Korea.
Earlier this month, two US senators called for the 60-year-old's resignation after the Wall Street Journal alleged that he had been told in 2015 of allegations against Nassar, who was jailed last month.
In response, USOC said it would not part ways with its chief until an independent investigation was completed.
"We have mutually agreed it is in the best interest of both Scott and the USOC that we identify new leadership so that we can immediately address the urgent initiatives ahead of us," USOC chairman Larry Probst said.