15-year-old boy arrested for allegedly stabbing sister to death in Las Vegas on October 5.

A 15-year-old boy was arrested in Las Vegas for allegedly stabbing his sister to death on October 5 at their apartment on North Pecos Road. Police responded around 9:22 PM and found the victim with stab wounds; she was pronounced dead at the scene. The incident followed an argument between the siblings. The boy has been charged with open murder and is being held at Clark County Juvenile Hall. The victim's identity will be disclosed by the coroner.