the military coup was formally announced at 6 pm. judging from subsequent circumstantial evidence, it is widely claimed that the conspirators of the morning massacre probably also plotted a coup themselves, but were overtaken in their plans by a rival military faction. it was never clear if, or to what extent, the latter faction was involved in the massacre. did they sit by idly watching the morning tragedy in order not to have blood on their hands and then later used the violence as a pretext to seize in the evening?