The attorney general in the state of Montana has launched an inquiry into the charity run by Three Cups of Tea co-author Greg Mortenson.

Attorney General Steve Bullock's statement Tuesday to The Associated Press follows investigations by 60 Minutes and author Jon Krakauer into inaccuracies in the book.

Those reports also raised questions whether enough of the money donated to Mortenson's Central Asia Institute was spent on building schools in Afghanistan and Pakistan.

Bullock says he has a responsibility to make sure charitable assets are used for their intended purposes. He says he will not jump to any conclusions and that he has been in contact with attorneys for the charity and they have pledged their full co-operation.

Mortenson and officials with the Central Asia Institute did not return calls for comment Tuesday.