Ether 9:5–6

And it came to pass that Akish sought the life of his father–in–law; and he applied unto those whom he had sworn by the oath of the ancients, and they obtained the head of his father–in–law, as he sat upon his throne, giving audience to his people. For so great had been the spreading of this wicked and secret society that it had corrupted the hearts of all the people; therefore Jared was murdered upon his throne, and Akish reigned in his stead.

From section: Omer’s Escape and Akish’s Mafia

From page: Jaredite Era