LAS VEGAS—The death penalty will be considered in the case of a Las Vegas man accused of kidnapping and killing a 4-year-old boy and hiding the body in a freezer while keeping the boy’s mother captive, a prosecutor told a judge during a brief schedule-setting hearing on Friday. Clark County District Court Judge Tierra Jones postponed Brandon Lee Toseland’s arraignment until at least April 15 on 10 charges including murder, kidnapping, and child abuse in the death of the boy and felony domestic battery alleging that he choked the child’s mother. Toseland appeared by video hookup from the Clark County Detention Center, where he has been held without bail since his arrest Feb. 22. Defense attorney Augustus Claus said outside court Friday that Toseland, 35, will plead not guilty to all charges. Police said they found Toseland in a vehicle with the boy’s mother after the boy’s 7-year-old sister gave …