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NEW YORK (AP) Citigroup's chief financial officer, Gary Crittenden, is leaving his post and becoming chairman of Citi Holdings, the unit created to sell off the bank's riskier assets.

A person familiar with the decision said Crittenden decided to change jobs due to an illness in his family. The person spoke on condition of anonymity because of the sensitivity of the matter.

The chairman role created for Crittenden will be a part-time responsibility overseeing the long-term strategy of Citi Holdings, the person said. Citi Holdings has an interim chief executive, Mike Corbat, who is in charge of day-to-day responsibilities.