Complex sentence: Both Mallah and his lawyer were barred from viewing the evidence supporting the passport refusal which was upheld so he then purchased a rifle and ammunition, prepared his will and made a video to be played after he died.
Split into simpler sentences: Both Mallah and his lawyer were barred from viewing the evidence supporting the passport refusal, which was upheld. Mallah then purchased a rifle and ammunition, prepared his will and made a video to be played after he died.