First charges filed in Mueller investigation into election interference; who might be arrested come Monday

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WASHINGTON, D.C.-- Special Counsel Robert Mueller has filed the first charges in his investigation into possible Russian meddling in last year's presidential election, signaling a possible turning point in the investigation.

Saturday, a senior Trump official says the White House has "no comment" on the news that charges have been filed.

Mueller has been focused on possible Russian meddling in the 2016 U.S. Presidential election, potential illegal collusion between President Donald Trump's campaign and Russia, as well as possible obstruction of justice by the president, who some accuse of trying to impede the investigation.

Friday night, a federal grand jury approved Mueller's first charges in the investigation, but isn't saying who is being charged.

The charges are being kept sealed, under orders from a federal judge. Anyone charged could be taken into custody as soon as Monday. Right now, it is unclear what the charges are.

ABC News names the most obvious potential targets as former National Security Adviser Michael Flynn and President Trump's former campaign manager, Paul Manafort, whose Virginia home was raided by the FBI in July.

"What I suspect given that the investigation appears to be ongoing is that Mueller has decided to indict certain individuals in the hope that they will what we call, flip," suggests former federal prosecutor Renato Mariotti. "In other words, that they will agree to cooperate with the investigation."

According to CNN, investigators are scrutinizing Trump and his associates' financial ties to Russia.

Mueller was appointed to lead the investigation into Russian meddling in the 2016 U.S. election last May, shortly after President Donald Trump abruptly fired then-FBI Director James Comey. Mueller then took the reins of a federal investigation that Comey first opened in July 2016, in the middle of the presidential campaign.

President Trump has denied any wrongdoing and has called the investigation a "witch hunt."

In addition to Mueller's investigation, three other committees on Capitol Hill are conducting their own probes.

More information is expected to become public as early as Monday, when whoever is facing charges could be taken into custody.

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