Sen. Dianne Feinstein (D., Calif.) told CNN's Wolf Blitzer on Wednesday that there is so far no evidence showing collusion between Donald Trump's campaign aides and Russian officials.

Blitzer mentioned that Feinstein and other colleagues from the Senate Select Committee on Intelligence had visited CIA headquarters on Tuesday to be briefed on the investigation. He then asked Feinstein whether she had evidence, without disclosing any classified information, that there was collusion between the Trump campaign and Russia during the 2016 presidential campaign.

"Not at this time," Feinstein said.

"Well, that's a pretty precise answer," Blitzer said.

Feinstein's direct answer contrasts with that of other Democrats who have claimed there is evidence showing collusion between Trump campaign aides and Russia.

Rep. Adam Schiff (D., Calif.), the ranking member of the House Intelligence Committee, said in March that he has seen "more than circumstantial" evidence showing collusion.

Rep. Eric Swalwell (D., Calif.), another member of the committee, echoed Schiff and said there is "evidence of collusion."

Both intelligence committees and the FBI are investigating Russia's actions during the 2016 presidential election, including a probe into whether Trump campaign aides were coordinating with the Kremlin.