SIOUX CITY, Iowa (AP) — A 19-year-old man convicted of stabbing two people to death last year in Sioux City will be sentenced next month. The Sioux City Journal reports Tran Walker faces a mandatory sentence of life in prison without parole when he’s sentenced Sept. 20 in Woodbury County District Court.

A judge last week convicted Walker in a bench trial of two counts of first-degree murder for killing 17-year-old Paiten Sullivan and 18-year-old Felipe Negron Jr.
Police say Walker was in a car with the two on Jan. 28 last year when he first stabbed Sullivan, then Negron when Negron tried to intervene.

Sullivan and Walker had recently broken up before her death. Sullivan’s stepmother testified that Walker and Sullivan broke up because he didn’t want her to finish school.