See my other comment for the rest, but the "fell against chair" case was documented in Donald Woods' book. It wasn't Biko specifically (though I believe his off

See my other comment for the rest, but the "fell against chair" case was documented in Donald Woods' book. It wasn't Biko specifically (though I believe his official explanation was "hunger strike", which was even bigger bullshit), but I believe it was more or less a contemporary of his.