Trump: ‘I am being investigated’

President Trump confirmed Friday that he is under investigation for firing FBI Director James Comey.

In a series of tweets, Trump lashed out against the investigation into whether his campaign colluded with Russia to influence the 2016 election. The probe has reportedly expanded to include whether Trump fired Comey in an attempt to obstruct justice.

He also claimed that the person investigating him advised him to fire Comey, though it’s unclear whom he was referring to. Attorney General Jeff Sessions recused himself from the investigation, and Deputy Attorney General Rod Rosenstein appointed Robert Mueller to oversee it in the wake of Comey’s ouster.

When Trump fired Comey, Rosenstein drafted a memo accusing the FBI director of bungling the investigation into Hillary Clinton’s email server, and Sessions wrote a letter saying the dismissal was warranted. Mueller has not made any public comments about Comey amid the firestorm.

Until Trump’s Friday-morning Twitter burst, only the Washington Post’s sources had indicated that Trump was being investigated for possible obstruction of justice. Trump had previously boasted that he was not personally under investigation, and Comey said the president had repeatedly pressured him to publicly clear him.

The missive was the latest in an ever-escalating Twitter tirade targeting the Russia inquiry.

Thursday, Trump griped he was receiving unfair treatment from investigators compared with his election opponent, Hillary Clinton.

Read more from Yahoo News:

• 140 characters in search of an editor: The tweets that will haunt Donald Trump

• Trump will stop short of scrapping Obama’s Cuba policies

• At congressional baseball game, newfound unity has its limits

• NYT issues correction to editorial linking Giffords shooting to Palin

• Photos: Dozens still missing after London high-rise fire

More on the shooting at GOP baseball practice:

• Live blog with latest updates from D.C. and Alexandria, Va.

• GOP lawmakers describe attack: ‘Like being in Iraq but without my weapon’

• Shooter had volunteered for Sanders last year; Bernie ‘sickened’ by ‘despicable act’

• Virginia Gov. McAuliffe pushes gun control after shooting