President Donald Trump’s senior adviser and son-in-law Jared Kushner will speak to the Senate Intelligence Committee in a closed-door session Monday as part of the panel’s widening probe into alleged ties between the Trump campaign and the Russian government.

The meeting was confirmed by Kushner’s attorney, Abbe Lowell, who said that his client “is prepared to voluntarily cooperate and provide whatever information he has on the investigations to Congress” and “appreciates the opportunity to assist in putting this matter to rest.”

Kushner is expected to answer the committee’s questions and not invoke his Fifth Amendment rights against self-incrimination, according to a person familiar with Kushner’s thinking.

The interview comes as the Senate Judiciary Committee also announced its intention to schedule former Trump campaign manager Paul Manafort and Trump’s son Donald Trump Jr. to testify before that panel in open session next Wednesday.

Trump Jr.’s attorney, Alan Futerfas, did not respond Wednesday evening to requests for comment about the Judiciary Committee hearing.

A lawyer for Manafort said that he and his legal team are reviewing the request and have not made a decision on which committee Manafort will speak with first.

The Judiciary Committee also asked Manafort and Trump Jr., as well as the Trump Organization and the Trump campaign, “to preserve all relevant documents related to Russian interference in the 2016 election” and to furnish the committee by Aug. 2 with documents related to the June 2016 meeting with Russians purported to have ties to the Kremlin.

Committee Chairman Charles E. Grassley, R-Iowa, and ranking Democrat Dianne Feinstein, D-Calif., added that they expect Manafort and Trump Jr. “will comply voluntarily with invitations to testify.” They added that they “have agreed to issue subpoenas, if necessary” for the two men.

Kushner, Manafort and Trump Jr. are expected to be asked about a number of reported contacts they and others had with Russians during the campaign and transition period. In particular, they are expected to be grilled about their participation in a June 2016 meeting in Trump Tower with a Russian lawyer that Trump Jr. was told had Kremlin connections and could provide damaging information on presidential candidate Hillary Clinton. Four other individuals were also present at the meeting.

“It’s safe to say that the committee’s going to reach out to everybody we feel has some contribution to make,” Senate Intelligence Committee Chairman Richard Burr, R-N.C., said Wednesday. “The Don Jr. meeting as of today has potentially eight individuals. All eight of those individuals will be important to us once we know the types of questions that we need answers to.”

Carol Leonnig and Tom Hamburger contributed to this report.