I have seen three failures like this already in the PNW. I haven't done a post-mortem on any of them yet, but basically the pulley will let go and chuck the belt. At first I thought they were assembled with either the wrong torque, no woodruff key or the incorrect woodruff key - but after having read the magic phrase "Made in India", I wouldn't at all be surprised if they just mechanically failed/ collapsed.
Two of the trucks in the JBLM GovPlanet lineup recently were so afflicted - and even though they described the trucks as 'running', it was pretty obvious from the engine compartment pics clearly showing the missing belt etc. that they wouldn't be running...far