The announcement by Attorney General Jeff Sessions comes within days of President Donald Trump firing his Secretary of State Rex Tillerson.
The controversial memo drafted by GOP House Intelligence Committee Chairman Devin Nunes alleged the FBI abused its surveillance authority.
Trump's public criticism of the FBI was a rare one that has not been seen in the past.
The White House previously said Trump only decided to oust Comey after meeting with Attorney General Jeff Sessions on Monday and Deputy Attorney General Rod Rosenstein, who discussed reasons for removing the director.
Wray is a litigation attorney with law firm King & Spalding in Washington and Atlanta.
New Jersey state Assemblyman Upendra Chivukula may have triumphed over his opponents in a Democratic Party debate last week, but his campaign for a House of Representatives seat is caught in a controversy. Arthur J Pais reports
The shock move comes days after Comey testified on Capitol Hill about the FBI's investigation into Russia's election meddling and a possible collusion between the country and Trump's campaign.
