Former President Obama must answer questions about U.S. government surveillance of Trump Tower during the presidential campaign, Sean Hannity said in his opening monologue tonight.

Hannity pointed to an explosive new report from Circa News, which found that the FBI briefly investigated a computer server tied to President Trump's business, that was allegedly communicating with a Russian bank.

The agency, however, has not gathered evidence of election tampering to date that would warrant criminal charges against any of the president’s associates.

Hannity said that during the campaign, a plurality of staffers would have had customary technological ties to the Trump Organization.

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Hannity said it's time for Obama and intelligence officials who oversaw this operation to "come clean."

"What do they know? What information was gathered?" Hannity said. "They need to assure you, the American people, that this was not not spying on a political opposition party just weeks before an election."

He added that just days before leaving office, Obama expanded the power of the National Security Agency to share intercepted personal communications with 16 other intelligence agencies before applying privacy protections.

"We've been asking: Why did President Obama wait until the last minute, two weeks before he leaves, to issue that order?" Hannity said. "It's an order that he did not apply to himself for eight years. And since this order was signed, we've seen an explosion of leaks coming from intelligence agencies."

He said all of this raises "very serious" national security, ethical and privacy issues.

"Until we get answers, we're going to keep asking these questions," Hannity said.

Sara Carter, of Circa News, later said that there were reportedly a total of two simultaneous investigations, and that only one was subject to a FISA warrant.

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