SIOUX CITY, Iowa (AP) — An October trial date has been scheduled for an 18-year-old in northwest Iowa accused of stabbing to death his ex-girlfriend and another young man. Woodbury Country District Court records say prosecution and defense attorneys requested a delay in the trial of Tran Walker. The trial had been set to begin Tuesday. The new starting date is Oct. 16.

Walker’s pleaded not guilty to two counts of first-degree murder, accused of killing 17-year-old Paiten Sullivan and 18-year-old Felipe Negron Jr., who both lived in Sioux City. Police say Walker was in a car with the other two on Jan. 28 when he began to stab Sullivan because he was upset that she had broken up with him. Police say that when Negron tried to intervene, Walker stabbed him, too.