The Trump Organization’s chief financial officer surrendered to authorities on Thursday, as he and Donald Trump’s namesake company prepare to face the first criminal charges from a probe that has hovered over the former president for years. Allen Weisselberg, a longtime Trump business lieutenant who helped run Trump’s real estate empire during his presidency, entered a building housing Manhattan’s criminal court. Weisselberg and the Trump Organization are expected to be arraigned later in the day in the probe by the district attorney, Cyrus Vance, a person familiar with the matter has said. Trump himself is not expected to be charged this week, though prosecutors have said their probe into his company is continuing, his lawyer Ronald Fischetti has said. Vance’s office has also been working with investigators from the office of New York Attorney General Letitia James. “This will be their first blow,” Fischetti said. Charges could increase pressure on Weisselberg to cooperate with prosecutors, which he has resisted. Weisselberg’s cooperation could be crucial to any future case against his longtime boss.