Brigham Young claims that priests from churches near Joseph Smith were influenced by a necromancer to find treasure.
Brigham Young, "The Priesthood and Satan—The Constitution and Government of the United States—Rights and Policy of the Latter-day Saints/The Church and Kingdom of God and the Churches and Kingdoms of Men," sermon dated February 18, 1855, Journal of Discourses, 26 vols. (Liverpool: F.D. Richards, 1855) 2:180-81
I well knew a man who, to get the plates, rode over sixty miles three times the same season they were obtained by Joseph Smith. About the time of their being delivered to Joseph by the angel, the friends of this man sent for him, and informed him that they were going to lose that treasure, though they did not know what it was. The man I refer to was a fortune-teller, a necromancer, an astrologer, a soothsayer, and possessed as much talent as any man that walked on the American soil, and was one of the wickedest men I ever saw. The last time he went to obtain the treasure he knew where it was, and told where it was, but did not know its value. Allow me to tell you that a Baptist deacon and others of Joseph’s neighbors were the very men who sent for this necromancer the last time he went for the treasure. I never heard a man who could swear like that astrologer; he swore scientifically, by rule, by note. To those who love swearing, it was musical to hear him, but not so to me, for I would leave his presence. He would call Joseph everything that was bad, and say, “I believe he will get the treasure after all.” He did get it, and the war commenced directly.
When Joseph obtained the treasure, the priests, the deacons, and religionists of every grade, went hand in hand with the fortune-teller, and with every wicked person, to get it out of his hands, and, to accomplish this, a part of them came out and persecuted him.