The trial for a Mexican national accused of first-degree murder in the abduction and killing of 20-year-old Mollie Tibbetts has been delayed.  25-year-old Cristhian Bahena Rivera will now face trial November 11 in Sioux City. His trial had been set for September 3, but was pushed back to give Rivera’s attorneys more time to prepare. In March, a judge approved his request to have the trial moved from Poweshiek County to Woodbury County.  Rivera is accused of killing Tibbetts, who disappeared while out for a run last July 18 in Brooklyn. Investigators recovered her body a month later in a cornfield. Officials say she was stabbed to death.  Rivera is also accused of being in the country illegally. He worked at a dairy farm a few miles from where Tibbetts disappeared.