President Donald Trump set off a chain reaction throughout Washington on Tuesday, after making the sudden announcement that he had fired FBI Director James Comey.

As the head of the FBI, Comey had been leading the investigation into potential ties between Trump’s campaign staff in the 2016 Presidential election and officials within the Russian government believed to have taken part in a concerted effort to help the president win the election.

According to the White House, Comey was fired over his mishandling of the Hillary Clinton email scandal, another prominent issue believed to have factored into Trump’s victory over the one-time front-runner, Clinton.  Though this claim has prompted accusations that the termination was actually a part of a cover-up effort intended to hinder the FBI’s probe into Russian collusion, as Trump had previously praised Comey for his handling of the Clinton email scandal both in person and in the press.

“Trump praised him for the work on the email investigation, so that’s not it,” said Austin Berglas, a former FBI supervisory agent on hacking cases. “I think he realized the extent of the Russia investigation under way and moved him out. To me, that’s the only logical explanation right now.”

Comey publicly announced that the Clinton email investigation should be closed in July of 2016, well before the election actually took place, but then retracted that statement and announced the re-opening of the case only 11 days before the nation was set to vote.  The new investigation was prompted by the discovery of e-mails that had been backed up on a personal computer, and although it ultimately proved fruitless, the reopening of the investigation is believed to have had a negative effect on Clinton’s chances at winning the vote.

Democrats now claim that terminating Comey over his actions last November seems like a suspicious bit of timing, as the investigation into Trump’s own potential legal issues is now underway and the Clinton email scandal is a relative moot point.

The president took to Twitter last week to voice his frustrations over Comey, calling him the “best thing that ever happened to Hillary Clinton.

“FBI Director Comey was the best thing that ever happened to Hillary Clinton in that he gave her a free pass for many bad deeds!” he wrote on Twitter. “The phony Trump/Russia story was an excuse used by the Democrats as justification for losing the election. Perhaps Trump just ran a great campaign?”