In an unusual turn of events, FTX founder Sam Bankman-Fried took the witness stand Thursday in his fraud and money laundering trial for three hours of questioning outside the presence of the jury.

U.S. District Judge Lewis Kaplan of the Southern District of New York characterized the proceeding as a hearing in which he could consider which parts of Bankman-Fried’s testimony will be admissible for jurors. He deferred any such ruling until Friday, when Bankman-Fried’s attorneys are expected to call him to the witness stand with jurors present.