1)
What is the law after he is brought to trial?
1.
Rashi: If he is exempted from exile, he is exempted. If he is obligated, he is returned to his Ir Miklat. Radak - if he is Chayav Misah, they kill him.
2)
Why is he exiled until the Kohen Gadol dies?
1.
Refer to Bamidbar 35:25:2:1-4 and the notes there.
