Democrats are blocking important witness interviews in the House Intelligence Committee’s probe of Russian meddling in the 2016 presidential election, according to a new report.

The panel, which is examining potential collusion between President Trump’s 2016 campaign and Russia, was set to interview 10 witnesses in June, Politico reported Thursday.

Two people familiar with the probe told Politico that the interviews are on hold following objections from Rep. Adam Schiff Adam Bennett SchiffSchiff claims DHS is blocking whistleblower's access to records before testimony GOP lawmakers distance themselves from Trump comments on transfer of power Rubio on peaceful transfer of power: 'We will have a legitimate & fair election' MORE (Calif.), the panel’s top Democrat.

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A third source said that the committee is not yet ready for the interviews, as some of the witnesses have not complied with its request for documents.

Politico reported that the interviews would have included former Trump campaign manager Paul Manafort, former campaign adviser Carter Page and longtime confidant Roger Stone.

“The majority and the witnesses are ready to go,” one source familiar with the House panel’s investigation said. “But the minority continues to object, claiming they aren’t ready.”

A senior committee aide told Politico, however, that Schiff and Rep. Mike Conaway (R-Texas) had agreed not to conduct witness interviews until witnesses responded to the panel’s request for documents.

Conaway is leading the investigation after Chairman Devin Nunes (R-Calif.) in April temporarily stepped aside from guiding it amid ethical concerns.

“Many such requests have to be complied with, and neither member believes that interviews should be scheduled until they are answered in full,” the aide said.

“Anyone suggesting that interviews take place before the committee has a chance to review the relevant documents plainly does not have the best interests of the investigation in mind.”

The committee on Wednesday issued seven new subpoenas in its Russia probe, with four directly related to Russian election meddling last year.

The other three reportedly focus on allegations of improper “unmasking” of Trump campaign officials in classified Obama administration reports during the presidential transition.