A teenage international kart racer stabbed his Airbnb host to death within hours of renting the room from her when he was just 16, according to UK prosecutors. Enzo Bettamio, now 18, allegedly used a large silver knife to murder 27-year-old Kamonnan Thiamphanit at her home in London before fleeing to Dubai, the Times of London reported . Thiamphanit, also known as Angela, was found in April 2024 with “multiple stab wounds all over her body [and] a large silver knife … protruding from the side