https://wccftech.com/engine-fire-due-to-fuel-leak-led-to-prototype-rocket-explosion-explains-musk/

The Starship SN9 prototype during a hot-fire test earlier this year. Image: SpaceX

After its fourth high-altitude flight test for the Starship next-generation interplanetary launch vehicle system ended in a dramatic mid-air explosion last week, Space Exploration Technologies Corp. (SpaceX) chief executive officer and chief engineer Mr. Elon Musk has provided more details on the reasons behind the unsuccessful landing. Out of the four prototypes that SpaceX has tested so far, SN11, which was tested last Tuesday was the most dramatic, as debris from the vehicle started hitting the ground soon after it attempted to reignite its Raptor engines, with confused onlookers struggling to get a view amidst a dense Texas fog.