They just changed the story but apparently its not definite. Perhaps to shift the blame off the principal?
look TA i am going to extend you a finger of friendship and let you in on a great secret
In 99% of the times, when big impact events happen the media reporters and the police/authorities are under enormous pressure to provide content/answers almost real time .There is no time to cross check facts, make sure there are no 'typos', etc - as such all kinds of wrong information will surface in the next 2-3 days after the event.
Later on after the dust has settled simple mistakes will be detected and corrected- however this will invariably be interpreted as a cover up by people who have no appreciation for the fact that under pressure mistaken reports will happen
I say 99% of the time, because in the putative 1% of the time counter-information is readily spread from the start or in the next 2-3 days and conspiracy theories are valid.
but that is very unlikely to be the case here
so in the future why dont you just ignore anything that is said for about 3 days, dont comment on the details, dont start threads, just wait it out
this is my finger of friendship -if you don't take it then fuck you