1 Kings 2:24-28

Now then, as the Lord lives, who has established me and set me on the throne of David my father, and has made me a house just as He promised, Adonijah certainly shall be put to death today!”

Then King Solomon sent the order by Benaiah the son of Jehoiada; and he struck him so that he died.

Then to Abiathar the priest the king said, “Go to Anathoth to your own field, for you deserve to die; but I will not put you to death at this time, because you carried the ark of the Lord God before my father David, and because you were afflicted in everything with which my father was afflicted.”

So Solomon dismissed Abiathar from being priest to the Lord, to fulfill the word of the Lord, which He had spoken regarding the house of Eli in Shiloh. Joab Executed

Now the news came to Joab because Joab had followed Adonijah, though he had not followed Absalom. So Joab fled to the tent of the Lord and took hold of the horns of the altar.