Trump later said he had planned to fire Comey regardless of what recommendation he received from Rosenstein and Attorney General Jeff Sessions, who has recused himself from the Russian Federation investigation.
His investigation then grew to include looking at whether President Trump fired FBI DirectorJames Comey because he was unwilling to back off the Russian Federation investigation.
Mr Trump did not identify who "the man" was but appeared to be questioning the integrity of Deputy Attorney-General Rod Rosenstein - the Justice Department's number two official who appointed Mr Mueller on May 17 and wrote a memo to Mr Trump that was critical of Mr Comey's performance after the former director was sacked.
In a tweet, Trump appeared to confirm that that he was being investigated for firing ex-FBI director James Comey.
Robert Mueller, the man chosen to take over the inquest as special investigator, had started investigating into presidentTrump's behaviour.
The top Democrat on the House Intelligence Committee on June 16 called on Congress to "unite to stop" Trump if he tries to fire Rosenstein or Mueller.
Mark Corallo, spokesman for Trump's personal lawyer, Marc Kasowitz, said earlier this week that, "The FBI leak of information regarding the president is outrageous, inexcusable, and illegal". In a series of tweets on Friday morning the presidentconfirmed that he was being investigated for firing James Comey on May 9th. Trump fired Comey on May 9.
A Trump confidant said this week the president had considered firing Mueller.
Citinga memo from the general counsel's office of Trump's transition team, the Times said members were given the order on Thursday for any information involving Russian Federation or Ukraine in the latest sign of the investigation's expanding reach. "I can go around them", he tweeted. "Witch Hunt" he tweeted from the White House shortly before leaving for Miami.
Friday's tweet marked the first time Mr Trump has publicly acknowledged he is under investigation.
"If the president is innocent, why is he afraid of this investigation?" asked NBC's Chuck Todd in a Meet the Press interview.
His spokeswoman Sarah Huckabee Sanders, however, would later tell reporters the president "has no intention" to dismiss Mueller. Donald Trump is in way over his head, and his presidency looks like it is living on borrowed time.
La legge sullo ius soli garantirebbe più sicurezza? La legge sullo Ius Soli è una follia contro la quale ci opporremo. Queste le parole del segretario generale della Cei, parlando alla Repubblica delle Idee a Bologna.
Police say the harrowing search for remains had paused Friday because of safety concerns at the blackened tower but has resumed. A number of police officers have formed a human guard at the reception of the town hall to stop anymore protesters entering.
If Fleury lands in Vegas, he would be the instant face of the team and the first starting goaltender in Golden Knights history. The fifth-year player, however, won't be ready for the start of the season after having surgery to fix a shoulder injury.
Per il capogruppo leghista al Senato "in quest'aula la democrazie lascia il tempo che trova, va in base a come si sveglia Grasso". Pronta la reazione degli assistenti parlamentari che a fatica hanno riportato l'ordine in Aula.
Hundreds have been left homeless, putting more pressure on officials in a city plagued by a chronic housing shortage. The fire at the 24-story building has led to community anger and protests over the British government's response.
The deceased sailors are: Dakota Kyle Rigsby, 19, of Palmyra, Virginia; Shingo Alexander Douglass, 25, of San Diego; Ngoc T. Most of the more than 200 sailors aboard would have been asleep in their berths at the time of the pre-dawn crash.
Incredibly, it was a front-row player who was the star of the final as Asafo Aumuma scored a hat-trick from the hooker position. New Zealand coach Craig Philpott says it is disappointing Falcon won't be able to play in the final.
La potenza della Honda Civic HF 2014
Una potenza da non sottovalutare per una macchina di questa gamma, da accoppiare ad una guidabilità invidiabile. Da non sottovalutare anche il "Display Audio" da accoppiare (se richiesto) al sistema di navigazione.
London fire: 58 missing presumed dead
Protesters sit down in Oxford Circus during a rally calling for justice for those affected by the Grenfell Tower fire on June 16. Condoling the incident earlier, Londor Mayor Sadiq Khan said, "The bad news, I'm afraid, is lots of people died in the fire".
British PM to meet fire survivors in Downing St
These were hard conversations with a tight-knit community that is understandably distraught, frustrated and increasingly angry . Several people appeared to clash with security guards inside, before leaving the building and gathering on the steps outside.
Seminoles' meltdown in field helps LSU post 5-4 win in CWS
I thought OSU pressed at the plate at times on Saturday, and that cost them several opportunities to score more runs. Quincy Nieporte and Taylor Walls also contributed a hit apiece, combining for a double and a RBI. "We made mistakes.
PM arrives in Pakistan after participating in SCO summit
Zarif also held separate meetings with Uzbek Foreign Minister Abdulaziz Kamilov and Kyrgyz Foreign Minister Erlan Abdyldaev. According to reports, the meeting had taken place on the sidelines of the Shanghai Cooperation Organisation ( SCO) summit .
58 missing, presumed dead in London high-rise fire
Adding: "When we were looking at this when I was DPP in relation to other fires, we were looking at manslaughter charges". The British government has announced a 5 million-pound ($6.3 million) emergency fund for the victims.
Vaccini obbligatori, più ne salti e più paghi di multa
Di queste ne abbiamo individuate 4 o 5 non propriamente di richiesta di informazione, ma chiaramente provocatorie. Ovviamente, la violazione dell'obbligo vaccinale comporta l'applicazione di significative sanzioni pecuniarie.
Justin Thomas shoots first 9-under round in US Open history
Open leaderboard. "Yeah, it definitely can help, just because it's similar-type stuff, low round and history and stuff like that". It took until this, the 117th staging of the US Open, for a player to post a round of nine under par in this championship.