The White House and U.S. Treasury declined to comment. Bloomberg News reported earlier that Buffett had been in touch with administration officials in recent days about the regional banking crisis, Bloomberg News reported on Saturday.

The source declined to elaborate on the details of the discussions.

The collapse of Silicon Valley Bank and Signature Bank this month has shaken confidence in the banking system and prompted a sell-off in banking stocks.

(Reporting by Nandita Bose in Wilmington, Delaware; additional reporting by David Shepardson in Washington, Urvi Dugar in Bengaluru, editing by Deepa Babington; Editing by Nick Zieminski)