WASHINGTON (AP) — Attorney General Jeff Sessions, whose contacts with Russia’s ambassador to the U.S. during the presidential campaign have sparked questions, agreed Saturday to appear before the Senate intelligence committee as it investigates alleged Russian meddling in the election.

Sessions recused himself in March from a federal investigation into contacts between Russia and the presidential campaign of Donald Trump after acknowledging that he had met twice last year with the Russian ambassador to the United States. He had told lawmakers at his January confirmation hearing that he had not met with Russians during the campaign.

Sessions has been dogged by questions about possible additional encounters with the ambassador, Sergey Kislyak. Senate Democrats have raised questions about whether the men met at an April 2016 foreign policy event at the Mayflower Hotel in Washington. The Justice Department has said that while Sessions was there, for a speech by Trump, there were no meetings or private encounters.