Sean Spicer. Alex Wong/Getty Images

Investigators working with special counsel Robert Mueller interviewed former White House press secretary Sean Spicer on Monday, according to a report from Politico .

. Spicer left the Trump administration in July. The investigators reportedly want to know if Spicer was aware of Trump's decision to fire FBI Director James Comey.

That question came up because Spicer told reporters on May 3 that Trump "has confidence" in Comey, who at the time was leading Trump-Russia investigation.

On May 9, Trump fired Comey.

Scrutiny over Spicer grew after he resigned in July, when it was revealed that he took copious notes in his role as press secretary.

Former White House press secretary Sean Spicer met with the investigators handling the Russia election-meddling investigation, Politico reported Tuesday evening.

Prosecutors working with special counsel Robert Mueller interviewed Spicer about how President Donald Trump handled the firing of former FBI Director James Comey.

Spicer was also asked about his own comments in the days that preceded Comey's dismissal, Politico reported, citing people familiar with the conversation.

Mueller's team previously asked for White House documents connected to the May 3 briefing during which Spicer said "the president has confidence in the director," in response to questions about Comey.

Reporters at the time were scrambling to get clarity about Trump's position on Comey after Trump said the day before that the FBI director had given Hillary Clinton a "free pass" in the investigation of her use of a private email server. Mueller's team wants to know whether Spicer knew of Trump's plan to fire Comey, which happened days later, on May 9.

The investigators also sought information on Trump's Oval Office meeting with Russian Foreign Minister Sergey Lavrov and the Russian ambassador to the US Sergey Kislyak. No US journalists were allowed into that meeting, where Trump reportedly revealed classified information to Lavrov and Kislyak; information that, at the time, had not been shared with US allies.

The scrutiny around Spicer also came into sharper focus after he left the Trump administration in late July when it was revealed that he had taken lots of notes during his time in the White House. Spicer is one of several current and former members of the Trump administration interviewed by Mueller's team. The former White House chief of staff Reince Priebus talked to the prosecutors last week.