They (the Mormon townspeople) sent messengers requesting that the Paiutes go into town and hear a letter read to them. Many did. They gathered in the meetinghouse to hear Bishop William Allred address them. According to a previous plan, the Circleville men who outnumbered the Indians three to one came in unarmed and intermingled with them. The bishop read the message from Fort Sanford, stressing that the settlers wanted only peace with their band, but the Indians would have to help by lending them their guns. In return, the Paiutes could work for the whites and be paid in goods. When the Indians showed reluctance to give up their weapons, the settlers acted: "each man knowing his place and what was expected of him, grabbed hold of his Indian to disarm [him]. They all showed resistance but their bows and arrows and knives were taken from them." Next, "their arms were tied to a stick which was passed behind their backs and under their arms."
Mormon militia proceeded to shoot the hand-tied Indian men, then slit the throats of their women and children one-by-one. Of this incident commanding general Daniel H. Wells, and Young's counselor, writes that these "brethren" did what was necessary.
[Exploring Mormonism: Mountain Meadows Massacre Timeline, http://www.exploringmormonism.com/mountain-meadows-massacre-timeline/; The Mormon Hierarchy - Extensions of Power by D. Michael Quinn ]