It's been months since U.S. investigators concluded that, yes, Russia did meddle in the 2016 election to help Donald Trump win the White House.
But the Russia probe is in the spotlight once again.
A source on Thursday (October 24) told Reuters that it is now the focus of a criminal investigation.
It all started earlier this year when Attorney General William Barr launched a Justice Department review of the Russia probe's origins, looking into Trump's claims that law enforcement and intelligence officials had acted improperly.
The review has come under fire from Democrats and some former officials.
They've accused Barr of using the Justice Department to chase conspiracy theories that could hand Trump political victories.
But the DOJ has now taken the review a step further and turned it into a criminal investigation.
The New York Times first broke the news.
According to its report, flipping the review to a criminal investigation gives the prosecutor in charge the power to issue subpoenas and call a grand jury.
Although it's not clear whether he's done this yet.
For years, Trump has lashed out at the Russia probe, calling it a witch hunt and a hoax.
He claims U.S. officials launched the probe to try and keep him out of the White House Although, so far, he hasn't provided any evidence.