President Donald Trump, 79, speculated on Tuesday whether Wall Street Journal owner Rupert Murdoch, 94, actually controlled the newspaper—one day after he demanded the 94-year-old be deposed in the $10 billion lawsuit he’s bringing against the paper.

President Trump wants an expedited deposition from Rupert Murdoch as part of his lawsuit against Murdoch and the Wall Street Journal over the alleged Epstein letter.

Trump has sued Murdoch and The Wall Street Journal over its July 17 article alleging the president sent a “bawdy” letter to Epstein for his 50th birthday, which included a drawing of a naked woman and Trump telling the late financier, “Happy Birthday — and may every day be another wonderful secret.”