U.S. President-elect Donald Trump's incoming national security adviser Michael Flynn took a call from the Russian ambassador last month, and discussed setting up a call between Trump and Russian President Vladimir Putin after Trump's inauguration on Jan. 20, a Trump spokesman said on Friday.

The Dec. 28 call followed text message exchanges initiated by Flynn on Christmas Day, in which he wished the ambassador a merry Christmas and said he looked forward to "touching base with you and working with you," Trump spokesman Sean Spicer told reporters.

(Reporting by Susan Heavey in Washington; Editing by Bernadette Baum)