Trump's tweets that his choice - lawyer Christopher Wray - is "a man of impeccable credentials."
There's no more information in the two-sentence tweet that ends, "Details to follow."
Wray emerged from a list of former prosecutors, politicians and law enforcement officials interviewed by Trump since the president fired FBI Director James Comey last month.
RELATED: White House looks for ways to undermine Comey's credibility
Wray works at the King & Spalding law firm. He represented New Jersey Gov. Chris Christie during the investigation into the George Washington Bridge lane-closing case. Two former Christie aides were convicted of plotting to close bridge lanes to punish a Democratic mayor who wouldn't endorse the Republican governor.
Wray worked for the Justice Department under President George W. Bush.
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