Until now, the White House has been essentially silent on whether Trump was actually a target of a federal investigation.President Donald Trump confirmed Friday he was under investigation and appeared to challenge the credibility of a senior Justice Department official, in a tweet that seemed to encapsulate his frustration with the ongoing focus on Russia’s involvement in the 2016 election.While it was unclear to whom Trump was referring in his tweets, the outburst arrived just hours after Deputy Attorney General Rod Rosenstein released a cryptic statement Thursday evening urging Americans not to trust “anonymous allegations”.Trump on Friday said the person conducting that probe was the individual who had told him to dismiss James Comey, who had been at the head of the bureau from 2013 until he was sacked early last month.President Donald Trump made a surprising comment about the possible investigation into obstruction of justice for firing former FBI Director James Comey.But Trump has publicly said he was going to fire Comey regardless of Rosenstein’s recommendation. But later, Trump said in an interview that he would have fired Comey “regardless” of Rosenstein’s recommendation.After a close Trump associate earlier this week said Trump was “considering” firing Robert Mueller, who was appointed special counsel last month, the White House said Trump has no intention to do so though Trump has the “right” to do so. Recent news reports have suggested Trump sought all three officials’ help in pressuring FBI Director James Comey to drop his investigation into former National Security Adviser Mike Flynn.So, now, Trump tweets it is a witch hunt that Rosenstein is investigating him for firing Comey.The president complained the probe is unfair and wondered why his defeated Democratic opponent was not getting the same scrutiny.Did he tell Congress the full story about Mr. Mueller’s investigation?ABC News reported on Friday that Rosenstein has said privately he may need to recuse himself from matters relating to the Russian Federation probe because he could become a witness in the investigation. She’s the associate attorney general, which makes her third in command at the Justice Department behind Rosenstein and Sessions.Deputy AG Rod Rosenstein should also say something about the “leak”.Trump was strongly critical of some of Comey’s testimony but said Comey had vindicated him by saying while he was at the agency, Trump was not the subject of the FBI’s Russian Federation probe.President Trump is tweeting his displeasure with the direction of the Russian Federation probe, which reportedly is now veering into an obstruction of justice investigation.Moscow has denied any interference.Trump kept up his criticism of the investigations in a series of tweets on Friday.In another development, members of Trump’s transition team that served him after he was elected in November until he took office in January have been ordered to preserve materials related to the Russian Federation matter, the New York Times reported. Sad!” Trump tweeted. “The Fake News Media hates when I use what has turned out to be my very powerful Social Media-over 100 million people! They are former Trump campaign manager Paul Manafort, his business partner Rick Gates, a national security adviser Carter Page, retired Lt. Gen. Michael Flynn and informal Trump adviser Roger Stone. Pence headed the Trump transition until Inauguration Day. He’s also hired Andrew Weissmann, who led the Enron investigation.