Verdict on Fatal Casino Bus Crash to Be Read on Friday A Bronx jury announced on Thursday afternoon that it had reached a verdict in the manslaughter trial of a bus driver accused of being so deprived of sleep that he caused an early morning crash last year that killed 15 passengers and injured many more. But, in an unusual move, the judge in the case said that the verdict would not be revealed until Friday morning. The jury, which began deliberating on Nov. 27, reached its decision around 3:40 p.m. But one juror had a prearranged medical appointment at 4 p.m. and Judge Troy K. Webber, of State Supreme Court, decided there would be insufficient time to address the 54 charges against the driver, Ophadell Williams. Lawyers for both sides in the trial, which began in early September, said they had never encountered such a situation but seemed to understand the decision. "We have to accommodate them," said Gary Weil, an assistant district attorney. Mr. Williams was traveling back from the Mohegan Sun Casino in Connecticut on the New England Thruway in March 2011 when his bus hit a guardrail and flipped over near the border between Westchester County and the Bronx. He was charged with manslaughter and negligent homicide, and prosecutors sought to prove that he acted recklessly and negligently by getting behind the wheel after not sleeping enough in the days before the crash. He claimed that he was cut off by a tractor-trailer and that the prosecution was just an effort to find a villain in a tragedy. Judge Webber said that the verdict would be sealed in an envelope until 11 a.m. on Friday. "We will make sure it's not broken," she said in the courtroom. Mr. Williams, clad in a gray suit and tan leather shoes, was handcuffed and led from the courtroom back to the jail cell where he had to spend at least one more night. Patrick Bruno, a lawyer for Mr. Williams, said that his client was happy to learn that the jury reached a verdict, but became "quite stressed" at the news he would have to wait. "We will be tossing and turning until tomorrow," Mr. Bruno said.