Top FBI official Bill Priestap to retire

A top FBI official who had a role in overseeing investigations into both Hillary ClintonHillary Diane Rodham ClintonBroadway play 'Hillary and Clinton' closing early due to low ticket sales Broadway play 'Hillary and Clinton' closing early due to low ticket sales Facing challenge from Warren, Sanders touts strength against Trump MORE and the Trump campaign will retire at the end of the year.

Bill Priestap, who currently serves as assistant director of the FBI's counterintelligence division, will leave the bureau after 20 years, The Wall Street Journal reported Tuesday. 

His departure is unrelated to the 2016 investigations and the questions that have been raised about them, the Journal reported.

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The FBI said in a statement to the newspaper that Priestap “became eligible to retire and has chosen to do so after 20 years of service."

Priestap was involved in the FBI's investigation into Russian interference in the 2016 election and whether Russians colluded with the Trump campaign, and he was also part of the bureau's investigation into Clinton's use of a private email server while she was secretary of State.

When Priestap leaves the FBI, there will be no high-ranking officials who were involved in both investigations left at the bureau, according to the Journal.

President TrumpDonald John TrumpTrump says 'Failing New York Times' should be held 'fully accountable' over Russia report Trump says 'Failing New York Times' should be held 'fully accountable' over Russia report Trump tweets ICE will begin removing 'millions' of undocumented migrants MORE fired former FBI director James ComeyJames Brien ComeyPress: Why do we need a new press secretary? Five memorable moments from Sarah Sanders at the White House Five memorable moments from Sarah Sanders at the White House MORE last year, while Deputy Director Andrew McCabeAndrew George McCabeMcCabe says it's 'absolutely' time to launch impeachment inquiry into Trump McCabe says it's 'absolutely' time to launch impeachment inquiry into Trump Feds gone wild: DOJ's stunning inability to prosecute its own bad actors MORE was fired in March by Attorney General Jeff SessionsJefferson (Jeff) Beauregard SessionsSarah Sanders to leave White House Sarah Sanders to leave White House Barr compares his return to DOJ to D-Day invasion MORE.

Counterintelligence agent Peter Strzok was fired in August after facing criticism for sending critical texts about Trump during the 2016 campaign. Priestap supervised Strzok before he was fired. 

Trump has been highly critical of the FBI and the Department of Justice while he has served as president, frequently saying that there should be further investigations into Clinton and that the Russia probe should come to an end.