Helaman 1:11–12

And he went unto those that sent him, and they all entered into a covenant, yea, swearing by their everlasting Maker, that they would tell no man that Kishkumen had murdered Pahoran. Therefore, Kishkumen was not known among the people of Nephi, for he was in disguise at the time that he murdered Pahoran. And Kishkumen and his band, who had covenanted with him, did mingle themselves among the people, in a manner that they all could not be found; but as many as were found were condemned unto death.

From section: Pahoran’s Assassination

From page: Zarahemla’s Age of War