On "Fox & Friends" Friday morning, Dan Bongino weighed in on the arrest of Roger Stone, which he called "highly unusual."

Stone, a former political adviser to President Trump, has been indicted on charges of obstruction, making false statements and witness tampering as part of Special Counsel Robert Mueller's investigation.

A spokesman for Mueller’s office said Stone, 66, was arrested in Fort Lauderdale on Friday morning after being indicted by a federal grand jury a day earlier, FoxNews.com reported.

Bongino, a former NYPD officer and Secret Service agent, said it is "highly unusual" that authorities arrested Stone at his home as opposed to letting him turn himself in, since the crimes he has been charged with are non-violent and there appears to be no obvious urgency to the arrest.

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"Roger Stone is no flight risk at all. He's one of the most recognizable people in this entire investigation," Bongino said. "Why would you hit his door at six o'clock in the morning to arrest him with the FBI and not allow him to turn himself in?"

He said the answer is "pretty obvious," noting that the arrest came a day after a Fox News report that the FBI's chances of securing a 2016 surveillance warrant for a Trump campaign aide were “50/50” without the controversial anti-Trump dossier.

"We've seen this with Mueller before," Bongino said. "Whenever there's some major revelation about the corruption involved in the initiation of this case ... next thing you know, Mueller, magically the next day, something happens. There seems to be, again here, a rush to get out in front of this story."

He argued that the Mueller probe would not have been launched without a foreign intelligence agent producing an unverified document, and the fact that officials are on the record saying so is a "stunning revelation."

"I believe the Mueller probe, in and of itself, was initiated to cover up a lot of DOJ and FBI malfeasance, and I find it awfully odd that Mueller is an integral figure in all of this," Bongino said.

He pointed out that Mueller is supposed to be investigating Russian election meddling, but none of the Trump associates embroiled in the probe have been charged with crimes related to collusion.

"We're supposedly investigating the biggest foreign collaborator, collusion scandal in United States political history, and yet still, to this day, two years later, despite millions in assets and skilled investigators, not a scintilla of evidence has been uncovered that this collusion actually happened?" Bongino said. "Does the American public seem to find this odd?"

Watch the interview above.

Later on the show, Geraldo Rivera agreed that the early-morning arrest by the FBI was "embarrassingly excessive" for process crimes, likening it to a raid on a drug dealer or violent criminal. He emphasized he does not like Stone personally due to his many years of "dirty trickster" political tactics, but the arrest is not a "major development" in the Mueller probe.

"There is no allegation that Roger Stone colluded with the Russians," said Rivera, explaining this is another indictment by Mueller for untruthful testimony.

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