"He was happy to answer all of their questions," the lawyer, William Burck, said in a statement.
It was not immediately clear what questions Priebus was asked or how long the interview lasted.
Priebus is one of several current and former White House aides expected to be interviewed by Mueller’s team in the coming weeks. Those investigators, besides looking into whether campaign aides coordinated with the Kremlin to influence the outcome of the presidential election, are also looking into a series of White House actions since the start of the administration, including the firing in May of former FBI Director James Comey.
They’re also investigating the short-lived tenure of former national security adviser Michael Flynn, who was forced to resign in February, and the drafting of a public statement about a June 2016 meeting between Donald Trump Jr. and a Russian lawyer at Trump Tower in New York.