WASHINGTON (AP) — A senior Republican on the Senate Intelligence committee says the panel should interview President Donald Trump’s eldest son about a meeting he and other Trump associates had last year with a Russian lawyer to hear information about former Secretary of State Hillary Clinton.

Sen. Susan Collins of Maine told reporters on Monday that “our intelligence committee needs to interview him and others who attended the meeting” as part of the panel’s probe into Russian interference in last year’s election and possible collusion between Russian officials and the Trump campaign.

Trump’s son-in-law Jared Kushner and then-campaign chairman Paul Manafort accompanied Donald Trump Jr. to the Trump Tower meeting with Kremlin-linked lawyer Natalia Veselnitskaya.

Donald Trump Jr. said he was told the person he was to meet with might have information that would be “helpful” to the Trump campaign.