Brian Williams leaving NBC News at the end of the year

Brian Williams, who remade his career as an MSNBC host after losing his job as NBC "Nightly News" anchor for making false claims about a wartime story, is leaving the network after 28 years.

Williams said in a note to colleagues that "following much reflection," he had decided to exit when his contract ends in December.

"This is the end of a chapter and the beginning of another," Williams wrote. "There are many things I want to do, and I'll pop up again somewhere."