The Secret History by Procopius

Now the wealth of those in Constantinople and each other city who were considered second in prosperity only to members of the Senate, was brutally confiscated, in the ways I have described, by Justinian and Theodora. But how they were able to rob even the Senate of all its property I shall now reveal.

There was in Constantinople a man by the name of Zeno, grandson of that Anthamius who had formerly been Emperor of the West. This man they appointed, with malice aforethought, Governor of Egypt, and commanded his immediate departure. But he delayed his voyage long enough to load his ship with his most valuable effects; for he had a countless amount of silver and gold plate inlaid with pearls, emeralds and other such precious stones. Whereupon they bribed some of his most trusted servants to remove these valuables from the ship as fast as they could carry them, set fire to the interior of the vessel, and inform Zeno that his ship had burst into flames of spontaneous combustion, with the loss of all his property. Later, when Zeno died suddenly, they took possession of his estate immediately as his legal heirs; for they produced a will which, it is whispered, he did not really make.