as far as someone knows
US /æz fɑːr əz ˈsʌm.wʌn noʊz/
UK /æz fɑːr əz ˈsʌm.wʌn noʊz/

1.
autant que je sache, pour autant que l'on sache
used to say that you think something is true, but that there may be things you do not know
:
•
As far as I know, he's still working there.
Autant que je sache, il travaille toujours là-bas.
•
As far as we know, no one was injured in the accident.
Autant que nous sachions, personne n’a été blessé dans l’accident.