In this bloody deed she was assisted by one of her slaves named Eugenius, who had also been one of those who perpetrated the outrage on Silverius.
Shortly afterwards, Belisarius was persuaded by his wife to kill Constantine.

What I have already recounted about Praesidius and his daggers belongs to this period.

Belisarius would have let him go, but Antonina would not rest until she had exacted vengeance for the words which I have just repeated.

This murder stirred up a great hatred against Belisarius on the part of the Emperor and of the chief nobles of the Empire.
Such was the course of events.

Meanwhile, Theodosius refused to return to Italy, where Belisarius and Antonina were then staying, unless Photius were sent out of the way; for Photius was naturally disposed to show his spite against anyone who supplanted him in another's good graces; but he was quite right in feeling jealous of Theodosius, because he himself, although Antonina's son, was quite neglected, whereas the other was exceedingly powerful and had amassed great riches.