After a week of noticeably less Twitter activity, President Trump is lashing out against Democrats over their treatment of Attorney General Jeff Sessions because of his contacts with Russian Envoy Sergey Kislyak.

Mr. Trump tweeted a demand for an investigation of Sen. Minority Leader Chuck Schumer over a photo of him with Russian President Vladimir Putin from 2003, and over House Minority Leader Nancy Pelosi over a photo showing her seated at a table with Kislyak, whom she denied having met.

I hearby demand a second investigation, after Schumer, of Pelosi for her close ties to Russia, and lying about it. https://t.co/qCDljfF3wN — Donald J. Trump (@realDonaldTrump) March 3, 2017

Later in the afternoon Pelosi’s Deputy Communications Director, Caroline Behringer, issued an official statement.

“Leader Pelosi’s answer to the question today was clearly about private, one-on-one meetings, which she has never had with Ambassador Kislyak. The Ambassador was incidental to the 2010 meeting between then-Russian President Medvedev and then-Speaker Pelosi. Clearly, one needs to remind that Attorney General Sessions lied under oath about a secret meeting amidst Russia’s hacking of our election, which he also didn’t disclose in a written questionnaire.”

Pelosi also offered a counter tweet.

.@realDonaldTrump doesn't know difference between official mtg photographed by press & closed secret mtg his AG lied about under oath. https://t.co/YRFCuJkjLA — Nancy Pelosi (@NancyPelosi) March 3, 2017

Earlier Friday, Trump tweeted about Schumer.

We should start an immediate investigation into @SenSchumer and his ties to Russia and Putin. A total hypocrite! pic.twitter.com/Ik3yqjHzsA — Donald J. Trump (@realDonaldTrump) March 3, 2017

Shortly after, Schumer tweeted that he would be “happy” to discuss the details of the photo. USA Today reported that Schumer’s office confirmed the photo had been taken at the opening of a Lukoil gas station in New York City. The Associated Press also had a photo of the event.

Happily talk re: my contact w Mr. Putin & his associates, took place in '03 in full view of press & public under oath. Would you &your team? https://t.co/yXgw3U8tmQ — Chuck Schumer (@SenSchumer) March 3, 2017

Schumer disclosed one thing about the photo --

And for the record, they were Krispy Kreme donuts. — Chuck Schumer (@SenSchumer) March 3, 2017

The Trump tweets come on the heels of Attorney General Jeff Sessions’ recusal Thursday from any investigation into Mr. Trump’s presidential campaign. Sessions had faced political pressure to recuse himself, and some Democrats demanded his resignation. He said in a news conference that ethics officials at the Department of Justice encouraged him to recuse himself. The day before, a Washington Post report revealed that he had met with Kislyak twice during the presidential campaign, although he had said in his Senate confirmation hearing that he had not had communications with Russian officials.