His former colleagues Savannah Guthrie and Hoda Kotb announced the news on the program, shocking viewers. Since then, more accusers have made complaints against Lauer, including one who claims he sexually assaulted her.
The veteran host, who had co-anchored Today for 20 years and was earning a reported $20 million a year, apologized on Thursday, saying in a statement, "There are no words to express my sorrow and regret for the pain I have caused others by words and actions. To the people I have hurt, I am truly sorry."
The 59-year-old married father of three also said that "some of what is being said about me is untrue or mischaracterized, but there is enough truth in these stories to make me feel embarrassed and ashamed. I regret that my shame is now shared by the people I cherish dearly."
Lauer is the latest rich and powerful man to be accused of sexual misconduct, following allegations made over the past year, mostly in recent months, against the likes of producer Harvey Weinstein, comedian Louis C.K., actor Kevin Spacey, and President Donald Trump.
Here is what we know about Lauer's sexual misconduct allegations: