The Paris prosecutor says its cyber-crime unit is conducting a search of X's offices.
Marius Borg Høiby is accused of 38 charges including four counts of rape in one of the biggest cases in Norway for years.
The grounding comes amid an investigation into a crash last year involving an aircraft of the same model.
Ukraine's sports minister calls Fifa president Gianni Infantino "irresponsible" and "infantile" for saying it will look at lifting a ban on Russia.
