Central Asian Institute (CAI) founder and board member Greg Mortenson was admitted for treatment for a heart condition to Deaconess Hospital in Bozeman, Montana, yesterday. In a statement to CAI supporters on Sunday, Mortenson, 53, said he had been struggling with hypoxia and that his doctor determined that he had a hole in his heart that was shunting blood, causing low oxygen saturations. “After a few weeks recovery,” noted Mortenson, “my doctor says I will be as good as new.” Mortenson also wrote that he will “come out fighting for what is right and just, and be able to talk to the media.”

Anne Beyersdorfer has been named as the temporary director for the CAI.

Also yesterday, Montana’s attorney general said it would look into the CAI after a 60 Minutes report and a Jon Krakauer article Three Cups of Deceit alleged that Mortenson improperly used CAI funding for personal gain and fabricated large portions of his best-selling books Three Cups of Tea and Stones Into Schools.

“In recent days, concerns have been raised about the management and financial affairs of the Central Asia Institute,” said Montana Attorney General Steve Bullock in a statement. “I've been in contact with attorneys for the Institute and they have pledged their full cooperation in addressing our concerns.  While looking into this issue, my office will not jump to any conclusions—but we have a responsibility to make sure charitable assets are used for their intended purposes.”

Kevin O’Brien, spokesperson for the Attorney General’s office, when asked if this was an investigation or query, noted that “The term ‘Investigation’ is premature,” and that the office is “not expanding beyond that at this time.”

Mortenson’t publisher, Viking, has also said that it will “carefully review” Mortenson’s books with him, and that its authors are obligated “to tell the truth, and they are contractually obligated to do so.”

Viking noted that Mortenson’s “work as a humanitarian in Afghanistan and Pakistan has provided tens of thousands of children with an education.”

Mortenson, in an interview with Outside magazine, said that portions of some of his stories had been altered to simplify them, and said that the 60 Minutes report used “inaccurate information, innuendo and a microscopic focus on one year’s IRS 990 financial, and a few points in the book, Three Cups of Tea, that occurred almost 18 years ago.”