SALINA, Kan. (AP) — An 18-year-old Kansas man will be sentenced in September for the shooting death of his young stepbrother at their home.

Ryan Velez was scheduled to be sentenced Wednesday for second-degree murder after he shot 9-year-old Kaden Harper in June 2010. The sentencing was delayed at the request of Velez’s attorney, who said he needed more time to review records from Larned State Hospital.

Velez has been at Larned since 2011 after pleading guilty to unintentional but reckless second-degree murder. He was 14 when he shot Kaden at their rural Assaria home. Prosecutors say the boys were arguing over doing chores.

The Salina Journal reports  Velez will now be sentenced on Sept. 22.