U.S. Cybersecurity and Infrastructure Security Agency (CISA) Director Christopher Krebs speaks to reporters at CISA’s Election Day Operation Center on Super Tuesday in Arlington, Virginia, U.S., March 3, 2020.Kevin Lamarque | ReutersWASHINGTON — President Donald Trump announced Tuesday on Twitter that he has “terminated” top U.S. cybersecurity official Christopher Krebs.In a pair of tweets, Trump said that Krebs gave a “highly inaccurate” statement about the security of the 2020 presidential election. Trump, who has not yet conceded to president-elect Joe Biden, alleged that there were “massive improprieties and fraud.”Twitter labeled the president’s tweets with a warning citing the claim about election fraud is disputed.Krebs, who heads the Department of Homeland Security’s Cybersecurity and Infrastructure Security Agency, has previously said that there is no evidence that the elections were not compromised by foreign interference. Earlier on Tuesday, Krebs tweeted from his government account, “On allegations that election systems were manipulated, 59 election security experts all agree, “in every case of which we are aware, these claims either have been unsubstantiated or are technically incoherent.”Less than an hour after Trump tweeted about his firing, Krebs took to his personal account to say “honored to serve.”He is the latest Trump administration official to depart on the heels of the election. Last week, Trump fired Defense Secretary Mark Esper via Twitter and replaced him with Christopher Miller, director of the National Counterterrorism Center. On the heels of Esper’s removal, a Trump administration official told CNBC’s Eamon Javers that “I assume FBI and CIA are next,” referring to FBI Director Christopher Wray and CIA Director Gina Haspel.The Department of Homeland Security did not immediately respond to a request for comment.The latest revelation comes as Trump has rejected the results of the U.S. presidential election. Other top administration officials, such as Vice President Mike Pence and Secretary of State Mike Pompeo, have publicly insisted that the election is not over.This is breaking news. Please check back for updates.