Their guards were selected from the company known as the Carthage Grays, Captain Smith, commander. In this choice the governor made a mistake which always left him under a charge of collusion in the murder of the prisoners. It was not, in the first place, necessary to select any Hancock company for this service, as he had militia from McDonough County on the ground. All the people of Hancock County were in a fever of excitement against the Mormons, while the McDonough County militia had voted against the march into Nauvoo. Moreover, when the prisoners, after their arrival at Carthage, had been exhibited to the McDonough company at the request of the latter, who had never seen them, the Grays were so indignant at what they called a triumphal display, that they refused to obey the officer in command, and were for a time in revolt. "Although I knew that this company were the enemies of the Smiths," says the governor, "yet I had confidence in their loyalty and their integrity, because their captain was universally spoken of as a most respectable citizen and honorable man." The governor further excused himself for the selection because the McDonough company were very anxious to return home to attend to their crops, and because, as the prisoners were likely to remain in jail all summer, he could not have detained the men from the other county so long. He presents also the curious plea that the frequent appeals made to him direct for the extermination or expulsion of the Mormons gave him assurance that no act of violence would be committed contrary to his known opposition, and he observes, "This was a circumstance well calculated to conceal from me the secret machinations on foot!" In this state of happy confidence the governor set out for Nauvoo on the morning of June 27. On the way, one of the officers who accompanied him told him that he was apprehensive of an attack on the jail because of talk he had heard in Carthage. The governor was reluctant to believe that such a thing could occur while he was in the Mormon city, exposed to Mormon vengeance, but he sent back a squad, with instructions to Captain Smith to see that the jail was safely guarded. He had apprehensions of his own, however, and on arriving at Nauvoo simply made an address as above outlined, and hurried back to Carthage without even looking for counterfeit money. He had not gone more than two miles when messengers met him with the news that the Smith brothers had been killed in the jail.