Minnesota Public Radio has provided additional details of allegations of sexual harassment against humorist Garrison Keillor, saying his alleged conduct went well beyond his account in November of accidentally touching a woman's bare back.

MPR said in a statement Tuesday that Keillor was accused by a woman who worked on his 'A Prairie Home Companion' radio show of dozens of sexually inappropriate incidents over several years, including requests for sexual contact and explicit sexual communications and touching.

MPR said a woman, whom it has not identified, detailed the allegations in a 12-page letter that included excerpts of emails and written messages. MPR said as it attempted to investigate the case, Keillor and his attorney refused to grant access to his computer, emails and text messages.

Minnesota Public Radio President Jon McTaggart released a letter to listeners on Tuesday, explaining the reasons for firing Garrison Keillor (pictured in July)

Keillor did not respond to an emailed request for comment from The Associated Press. He told the Minneapolis Star Tribune listeners were angry over his firing because they 'smelled a rat' and 'they know I'm not abusive.' He called the woman's account 'a highly selective and imaginative piece of work' drawn up by her attorney.

MPR faced a backlash from outraged Keillor fans after firing the best-selling humorist after four decades of his telling folksy stories about his fictional Minnesota hometown of Lake Wobegon. Keillor accused the station of firing him without a full investigation. Until MPR's new statement Tuesday, the only account of his actions was his.

He told the Star Tribune on November 29 that he had simply been trying to console a co-worker.

When Keillor (pictured), the creator and longtime host of A Prairie Home Companion, was fired from MPR in November, he said it was because he touched a coworker's back while trying to console her. In a note to listeners on Tuesday, the station's president said Keillor's behavior was much worse - and broader - than that

'I meant to pat her back after she told me about her unhappiness, and her shirt was open and my hand went up it about six inches. She recoiled. I apologized,' Keillor told the newspaper in an email. 'I sent her an email of apology later, and she replied that she had forgiven me and not to think about it.'

In a note to members Tuesday afternoon, MPR President Jon McTaggart said otherwise.

'If the full 12-page letter or even a detailed summary of the alleged incidents were to be made public, we believe that would clarify why MPR ended its business relationship with Garrison and correct the misunderstandings and misinformation about the decision,' he added.

The station also disputed that Keillor was fired in a rush, laying out a timeline in which it launched an internal investigation after receiving a general allegation against Keillor from a former employee - not the alleged victim - in late August. MPR said that employee refused to identify the alleged victim or detail what happened to her, and MPR didn't get specifics of the allegations until it received letters from the former employee September 29 and from the alleged victim October 22.

'In the allegations she provided to MPR, she did not allege that Garrison touched her back, but did claim that he engaged in other unwanted sexual touching. In a letter to MPR dated October 22, 2017, the woman’s attorney described dozens of sexually inappropriate incidents directed at her client over a period of years.

MPR News conducted a separate investigation which found that Keillor cheated on his wife with at least one co-worker, and tried to start an affair with a college student at the University of Minnesota, where he taught writing. Keillor pictured above with his wife, Jenny Lind Nilsson, in 2006

'In fact, the woman’s attorney presented us with a 12-page letter detailing many of the alleged incidents, including excerpts of emails and written messages, requests for sexual contact and explicit descriptions of sexual communications and touching.

'Because of the serious and sensitive nature of the allegations, we decided to undertake an independent investigation and we told Garrison that we were doing so,' McTaggart said.

MPR said it notified its board October 26 and launched an independent investigation a few days later.

MPR said Keillor responded to the allegations with his attorney present. MPR said Keillor and his attorney declined to give access to his computer, emails and text messages to allow a full investigation.

The station said it had avoided releasing more information about the allegations while it was in mediation with Keillor 'and the other parties in this matter.'

'Unfortunately, the mediation sessions have not produced the final settlements we had hoped for,' the station said.

Meanwhile, MPR News has conducted its won investigation and found even more examples of inappropriate behavior on Keillor's part.

The news outlet, whose investigation was independent from their parent company's outside investigation, said what they found amounted to a 'years-long pattern of behavior that left several women who worked for Keillor feeling mistreated, sexualized or belittled'.

In 2009, a subordinate who was having an affair with married Keillor said she received a check for $16,000 from his production company and asked her to sign a non-disclosure agreement, agreeing to never speak out about their relationship. She allegedly declined to sign the document and never cashed the check, MPR News reports.

In another incident in 2012, Keillor is said to have posted a limerick in his bookstore about a young woman who worked there and 'the effect she had on his state of arousal,' according to the MPR News investigation.

MPR News also discovered that a producer who was fired from Keillor's Writers Almanac in 1998 later sued MPR for sex discrimination, saying that Keillor bullied her then replaced her with a younger woman.

In the final incident that MPR News learned of, a 21-year-old college student in 2001 said she received an email from Keillor, then her writing instructor at the University of Minnesota, detailing his 'intense attraction' to her.

MPR has removed from its website archived 'A Prairie Home Companion' shows featuring Keillor. The network also ended broadcasts of 'The Writer's Almanac,' Keillor's daily reading of literary events and a poem, and ended rebroadcasts of Keillor-hosted 'Prairie Home' shows.

Keillor, 75, retired in 2016 as host of 'Prairie Home,' a Saturday evening radio variety show he created in 1974. The show, now titled 'Live from Here,' continues with Keillor's hand-picked successor, mandolinist Chris Thile.