Maidstone Crown Court heard the boy grabbed the victim around the mouth before repeatedly stabbing her face, neck, chest, abdomen, arms and legs, stole her phone and threw her into a bush.
George Knights was found guilty of murder last June and was sentenced to life in prison on Friday, with a minimum of 23 years for the murder of 38-year-old Stephen Chapman.
George Knights, 19, was today jailed for life with a minimum of 23 years for the October 2020 murder of dad-of-five Stephen Chapman at Maidstone Crown Court.
Former police officer Thomas Blant who downloaded sick child abuse photographs of pre-pubescent girls was today handed a 12-month suspended jail sentence at Maidstone Crown Court.