A Utah County juvenile judge Friday denied a petition from a 16-year-old Las Vegas youth to return jurisdiction of his manslaughter case to the juvenile court.

Last month Steven Edward Floyd was charged as an adult with the second-degree felony in 4th Circuit Court in connection with the death of a 69-year-old Fillmore man killed in a car chase March 18. Floyd was also charged with evading a police officer, a third-degree felony.Boyd Day was killed when his car was struck at the intersection of South University Avenue and East Bay Boulevard by a car fleeing from police. Floyd was arrested at the scene.

Judge Leslie Brown denied a petition from Floyd's attorney John Musselman to try Floyd in the juvenile system. Musselman said he will decide next whether to appeal Brown's decision.

Police say Floyd had run away from a Las Vegas youth facility and has a past criminal record.

County Attorney Kay Bryson said if Floyd does not appeal the decision, a preliminary hearing will be set and he will be tried as an adult.

If convicted of the manslaughter charge, Floyd could be sentenced to one to 15 years in prison and fined $10,000. If convicted of the evading charge he could be sentenced to less than five years in prison and fined $5,000.