The rocket was undergoing a static fire test of the stage, in which a vehicle is clamped to a test stand while its engines are ignited, when the booster broke free. According to a statement from the company, the rocket was not sufficiently clamped down and blasted off from the test stand “due to a structural failure.”
Video of the accidental ascent showed the rocket rising several hundred meters into the sky before it crashed explosively into a mountain 1.5 km away from the test site.
Hey I just found out that that guy is very much probably a paid propagandists, I don’t have any direct sources to prove it but I can point to this video on why I think it is the case:
https://www.youtube.com/watch?v=1JaPzJKycxc
This is just the part 2, if you want the part 1 here it is
https://www.youtube.com/watch?v=2mQ8plzWl9g