HELENA, Mont. — “Three Cups of Tea” author Greg Mortenson, who has spent four years weathering accusations that his best-selling book contained fabrications and that he mismanaged the charity he co-founded, will retire in January, Central Asia Institute officials said Thursday.

In 2011, “60 Minutes” and author Jon Krakauer broadcast and published reports that Mortenson had made up many of the events in “Three Cups of Tea,” which told the story of how Mortenson decided to build schools in Pakistan after becoming lost during a mountaineering expedition.