In recent months, Leonardo DiCaprio secretly testified before a D.C. grand jury as part of an investigation into a multibillion-dollar fraud that centered around a Malaysian government investment fund, The Washington Post reports. Prosecutors reportedly consider DiCaprio a “witness who can provide useful insights” about Malaysian financier Low Taek Jho—who is accused of stealing millions from an investment fund called “1MDB” and funding a lobbying effort in the U.S. to stop the investigation. Sources told the newspaper that DiCaprio is not a “target of the probe,” and it is unclear what the actor told the grand jury. Jho was reportedly charged in New York federal court late last year for his alleged role in the theft and money laundering of the fund. A former rapper of the Fugees, Prakazrel “Pras” Michel and prominent Republican fundraiser Elliott Broidy were allegedly involved in Jho’s efforts to kill the probe. According to the Post, Michel and Broidy have yet to be charged, but investigators are looking into whether crimes were committed.