A day earlier, Trump had questioned why his general election rival Hillary Clinton was not being investigated.
It is not clear, however, if Trump was referring in Friday's tweet to Mueller or Deputy Attorney General Rod Rosenstein, who wrote a letter to Attorney General Jeff Sessions recommending that the president fire Comey.
Aside for Mueller, Feinstein also noted how Trump previously received a memo from Rosenstein, containing the Deputy Attorney General's recommendation ahead of the Comey firing.
Last month, Rosenstein sent a memo to Trump raising concerns over FBI DirectorJames Comey - concerns the White House then cited as a central reason for Comey's firing.
While Mr Rosenstein appointed Mr Mueller as a special counsel to oversee the investigation, it is possible that he could be called as a witness as part of the investigation.
Trump saidin an interview with NBC News that he would have fired Comey even without Rosenstein's memo. However, Trump later asserted that he had already made the decision himself to fire Comey. Trump confirmed in a tweet Friday he was under investigation and appeared to take aim at Rosenstein, calling the investigation a "witch hunt".
Comey has also said Trump asked him to drop an investigation into ties between Michael Flynn, who advised Trump during the campaign and briefly served as national security adviser after Trump's inauguration, and Russian officials.
The tweet represented a remarkable show of frustration by a serving President, who is making no secret of his emotions as an investigation that started out as an effort to understand Russian meddling in the election appears to be moving ever closer towards his inner circle and narrowing in on his own conduct.
The top lawyer for the Trump transition team has ordered the organization's staff to preserve all records and other materials related to the widening investigation by special counsel Robert Mueller into contacts between the Trump campaign and Russian representatives. "Americans should be skeptical about anonymous allegations".
"If he fires Mueller, I will tell you, we are right on the brink of a constitutional crisis", the IL senator said. "The Department of Justice has a long-established policy to neither confirm nor deny such allegations". I agree with the almost unanimous opinions of former Department officials, the way the Director handled the conclusion of the email investigation was wrong.
Helmut Kohl, German reunifier, dies
In a 2012 tribute , former USA president Bill Clinton described Mr Kohl as one of post-war Europe's defining statesmen. And about the German situation they said: "if Helmut Kohl doesn't push it through, nobody else will", Kohl said.
His time under Bush, Obama and then Trump made him the longest-serving US attorney in the nation's history when he was confirmed to his current role under Sessions.
That means Georgia lawmakers could have to decide whether to spend more taxpayer money on healthcare, or cut services, he said. Trump has urged the Republican-led Senate to pass a more "generous" bill than the one approved by the House.
At the State Department, Secretary of State Rex Tillerson and Defense Secretary Jim Mattis hosted Chinese counterparts. North Korea has conducted five nuclear tests since 2006, including two previous year .
Officials initially told local media the man, who is yet to be identified, was wearing a backpack and an "explosive belt". EDT- Interior Minister Jan Jambon announced that the Belgian security forces have identified the terrorist.
Peralta suma 4 goles en Copa Oro , los que sumó en la edición de 2015 , tras hacerle tres a Cuba y uno a Jamaica . AsÌ, de los 25 goles que 'El Cepillo' suma en la selección mexicana , 12 los ha marcado en citas importantes .
Fleury, 32, has an all-time, regular-season record of 375-216-68 and has won three Stanley Cups with the Pittsburgh Penguins . Vegas's selection was 35-year-old Deryk Engelland , one of two pending unrestricted free agents the Golden Knights drafted.
The Senate plan also keeps protections for people with preexisting conditions, while the House bill would let states waive those. Medicaid is a state program but it relies on funds from the federal government to support those who need the services.
Según la investigación, en aquel momento se permitió escapar a quienes transportaban la droga a bordo de otro camión. El policía Alejandro Daniel " Aguja " Agüero recibió la pena de 12 años de prisión y una multa de 20 mil pesos.
They are fighting, especially in spring and summer, motivated teams- those who want to get into European Cups or avoid relegation. For an expert, it is a reason to ensure a stable income with the competent rates combined with rational management of the bank.
If you just look at the specifications of what this box is, it's in a different league than any other console that's out there. Microsoft has just announced that it will soon allow original Xbox titles to be played on its next-gen Xbox One console.
La semana pasada, los estudiantes protagonizaron protestas una de las cuales terminó en enfrentamientos con la Policía. Así lo confirmó la Policía Nacional , sin dar detalles sobre si los detenidos eran o no universitarios.
Emite CFE bono en mercado de Taiwán
El instrumento tiene un rendimiento de 4.766% o 300 puntos básicos sobre los papeles comparables del Tesoro de EU. El bono cuenta con la calificación internacional "BBB+" emitida por Standard & Poor?s y Fitch Ratings.
UK buildings found with combustible cladding
One of the three blocks found to have combustible cladding is on Camden Council's Chalcots estate, in north London . A public inquiry has also been launched and " no stone will be left unturned ", May promised Thursday.
Ram Nath Kovind to file nomination on June 23
He had told reporters that, "It (the party's stand on presidential poll) will be decided by party's general secretary Sasikala". The Sena, which shares power at the Centre and in Maharashtra, has been in a love-hate relationship with the BJP .
Sidney Crosby cements his legacy with another Stanley Cup
Murray also blanked Nashville in the Penguins' 6-0 rout in Game 5. (Marc-Andre Fleury), throughout that whole Washington series. TAD measures consumption across multiple platforms, combining the average minute audience (AMA) for television and digital.
Fultz, Ball taken with top two picks
The Sixers hold the number one pick in the draft, but are trying to add another first-rounder to their plate. So they explained to Fultz what the column had said and asked the point guard for his reaction.