After the death of Solomon, Sergius, who, as has been said, was his nephew, took over the government of Libya by gift of the emperor. And this man became the chief cause of great ruin to the people of Libya, and all were dissatisfied with his rule--the officers because, being exceedingly stupid and young both in character and in years, he proved to be the greatest braggart of all men, and he insulted them for no just cause and disregarded them, always using the power of his wealth and the authority of his office to this end; and the soldiers disliked him because he was altogether unmanly and weak; and the Libyans, not only for these reasons, but also because he had shown himself strangely fond of the wives and the possessions of others. But most of all John, the son of Sisiniolus, was hostile to the power of Sergius; for, though he was an able warrior and was a man of unusually fair repute, he found Sergius absolutely ungrateful. For this reason neither he nor anyone else at all was willing to take up arms against the enemy. But almost all the Moors were following Antalas, and Stotzas came at his summons from Mauretania. And since not one of the enemy came out against them, they began to sack the country, making plunder of everything without fear. At that time Antalas sent to the Emperor Justinian a letter, which set forth the following:
"That I am a slave of thy empire not even I myself would deny, but the Moors, having suffered unholy treatment at the hands of Solomon in time of peace, have taken up arms under the most severe constraint, not lifting them against thee, but warding off our personal enemy; and this is especially true of me. For he not only decided to deprive me of the maintenance, which Belisarius long before specified and thou didst grant, but he also killed my own brother, although he had no wrongdoing to charge against him. We have therefore taken vengeance upon him who wronged us. And if it is thy will that the Moors be in subjection to thy empire and serve it in all things as they are accustomed to do, command Sergius, the nephew of Solomon, to depart from here and return to thee, and send another general to Libya. For thou wilt not be lacking in men of discretion and more worthy than Sergius in every way; for as long as this man commands thy army, it is impossible for peace to be established between the Romans and the Moors."