OMAHA, Neb. (AP) — An Omaha teenager has been sentenced to 10 to 15 years in prison for his role in the stabbing death of a pizza delivery man.

Omaha media reports 18-year-old Marcus Robinson was sentenced Monday for helping kill Christopher Taylor in 2010.

Prosecutors say Robinson was one of four men who lured Taylor to a vacant apartment and killed him.

Robinson cooperated with investigators and testified against two of the other people involved. He also completed high school while out of jail on bond as the case progressed.

But the judge who sentenced Robinson said he played an active role in the crime, so he deserved a stern sentence.