Flavius Josephus, The Wars of the Jews
William Whiston, A.M., Ed.

[451] But as to Catullus, the emperors Were so gentle to him, that he underwent no severe condemnation at this time; yet was it not long before he fell into a complicated and almost incurable distemper, and died miserably. He was not only afflicted in body, but the distemper in his mind was more heavy upon him than the other; for he was terribly disturbed, and continually cried out that he saw the ghosts of those whom he had slain standing before him. Whereupon he was not able to contain himself, but leaped out of his bed, as if both torments and fire were brought to him. This his distemper grew still a great deal worse and worse continually, and his very entrails were so corroded, that they fell out of his body, and in that condition he died. Thus he became as great an instance of Divine Providence as ever was, and demonstrated that God punishes wicked men.