A steady drip of reports detailing just how closely investigators are scrutinizing Jared Kushner suggested it was only a matter of time before the West Wing princeling and special counsel Robert Mueller came face to face. That theory was confirmed on Wednesday when both CNN and The New York Times reported that, for less than 90 minutes earlier this month, Kushner met with investigators working with Mueller to discuss former Trump national security adviser Michael Flynn.

Both reports state that Mueller’s team, which is in the process of interviewing key campaign and White House officials to determine whether anyone in the Trump orbit worked with Russian officials to influence the outcome of the 2016 election, questioned Kushner about details of his interactions with Flynn. The Times reported that Kushner was asked about his pre-inaugural meeting at Trump Tower with Flynn and Russian Ambassador Sergey Kislyak during the presidential transition, during which they discussed opening a line of communication between the incoming administration and the Russian government. Kushner was also reportedly asked about other meetings between Flynn and Russian officials, and CNN reported Kushner was asked to clarify answers to questions lawmakers have asked him, as well as pieces of information that have come out in the media.

The relationship between Kushner and Flynn has been of interest to Mueller’s team, including the question of Kushner’s role in the firing of former F.B.I. director James Comey. Flynn, who was previously being investigated by Comey, has remained a central target of Mueller’s probe, with the special counsel subpoenaing documents and testimony in relation to his business dealings, foreign lobbying, and activities throughout the campaign and transition period. Mueller has reportedly been gathering enough evidence to build a case against Flynn, potentially, to flip him.

It is possible that Kushner’s interview with Mueller could help put together that puzzle. Flynn’s lawyers have since cut ties with Trump’s legal team and met with members of Mueller’s team in what has been widely interpreted as a move to cooperate with the Justice Department. The Kushner-Mueller meeting also comes amid news that the special counsel has postponed a grand-jury testimony linked to his investigation.

Kushner’s attorney, Abbe Lowell, said in a statement that his client “has voluntarily cooperated with all relevant inquiries and will continue to do so.” Kushner has denied any collusion and has explained away a series of questionable dealings—a security clearance form that left off more than 100 meetings with foreign officials; four meetings with Russians throughout the campaign and transition; sitting in on a meeting with a Russian lawyer who promised his brother-in-law Donald Trump Jr. dirt on Hillary Clinton—as clerical errors and innocent functions of his chaotic job.

This summer, he testified to congressional committees investigating Russia’s role in the presidential election. But earlier this month, members of the Senate Judiciary Committee sent Lowell a letter asserting that he and his client had not turned over all requested documents (Lowell, at the time, disputed that they hadn't been fully forthcoming). This week, the Senate Intelligence Committee chairman, Richard Burr, said he would not share Kushner’s interview transcript with the Judiciary Committee, which could mean that Kushner will have to return to Capitol Hill for further questioning.

He may be required to meet with Mueller’s team a second time as well. According to the Times, the initial questioning was limited in its scope, leaving open the possibility that he could be interviewed again.