President Donald Trump lashed out at Senate Minority Leader Chuck Schumer on Friday, who has called for Attorney General Jeff Sessions to resign over the uproar about his contacts with Russians.

Trump tweeted a photo of the Democratic senator from New York and Russian President Vladimir Putin laughing and holding Krispy Kreme doughnuts. Trump said "we should start an immediate investigation" into Schumer's ties with Russia, calling him a "total hypocrite." He did not accuse Schumer of any specific wrongdoing.

Trump tweet: We should start an immediate investigation into @SenSchumer and his ties to Russia and Putin. A total hypocrite!

Schumer responded that he would "happily" talk about his contact with Putin. He said it took place in 2003 "in full view" of the press and the public. Schumer then asked if Trump and his team would talk openly about any contact with Russia.

Schumer tweet: And for the record, they were Krispy Kreme donuts.

The tweets come a day after Sessions said he would recuse himself from any investigations related to the Trump campaign. Lawmakers raised concerns that he misled senators in his January confirmation hearing about his contacts with the Russian ambassador to the United States, Sergey Kislyak, while he was a U.S. senator and advisor to the Trump campaign.

On Thursday, Schumer called for Sessions to resign, saying he had "weeks" to "correct the record" about his testimony and did not.

Later Friday, Trump slammed House Democratic leader Nancy Pelosi, who also called for Sessions to resign and accused him of perjury. The president said he demands a second investigation into the representative from California, linking to a Politico story that shows a photo appearing to contradict her Friday statement that she never met Kislyak.

Trump tweet: I hereby demand a second investigation, after Schumer, of Pelosi for her close ties to Russia, and lying about it.

Trump has called any developments about links between Russia and his campaign officials a "total witch hunt." He previously asked his first national security advisor, Michael Flynn, to resign after the former general misled top White House officials about his conversations with Kislyak.

Sessions oversees the Justice Department and FBI, which have led investigations into alleged Russian meddling in the 2016 presidential election and any links between Russia and Trump associates. Sessions' recusal will put a deputy in charge of the investigations that relate to the Trump campaign, but it is not entirely clear how broad that recusal will be.