Reporters present for the interaction quickly took to Twitter to report on Feinstein's apparent confusion.

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"Asked by reporters about her announcement to resign, [Feinstein] says 'If I haven't made that decision, I haven't released anything.' A staffer then told the senator that a statement had been released. Feinstein responded saying ‘I didn’t know they put it out,’" one reporter wrote, later clarifying he meant "retire" instead of "resign."

"Feinstein on her retirement: 'I haven’t made that decision. I haven't released anything.' Staffer: ‘We put out the statement.’ Feinstein: 'You put out the statement? I didn't know they put it out,'" another wrote.

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The second reporter later corrected her reporting, saying it sounded like Feinstein said "I should have known they put it out," rather than "I didn't know they put it out.

According to another report from Raw Story, which included an audio clip of Feinstein speaking to a reporter, she wasn't aware that she was retiring at all.

"Oh, no, I'm not announcing anything. I will one day," Feinstein told the outlet in an interview only an hour after her retirement was announced.

This isn't the first instance in which Feinstein's memory and cognitive abilities have been questioned. Last year, a number of her Senate colleagues anonymously expressed concern that her memory was fading and that she no longer had the ability to serve.

Fox News Digital reached out to Feinstein's office for comment but did not receive an immediate response.