TACITUS, Annales III.7
[III.vii] Tum exuto iustitio reditum ad munia, et Drusus Illyricos ad exercitus profectus est, erectis omnium animis petendae e Pisone ultionis et crebro questu, quod vagus interim per amoena Asiae atque Achaiae adroganti et subdola mora scelerum probationes subverteret. nam vulgatum erat missam, ut dixi, a Cn. Sentio famosam veneficiis Martinam subita morte Brundisii extinctam, venenumque nodo crinium eius occultatum nec ulla in corpore signa sumpti exitii reperta.
[3.7] The suspension of business then ceased, and men went back to their occupations. Drusus was sent to the armies of Illyricum, amidst an universal eagerness to exact vengeance on Piso, and ceaseless complaints that he was meantime roaming through the delightful regions of Asia and Achaia, and was weakening the proofs of his guilt by an insolent and artful procrastination. It was indeed widely rumoured that the notorius poisoner Martina, who, as I have related, had been despatched to Rome by Cneius Sentius, had died suddenly at Brundisium; that poison was concealed in a knot of her hair, and that no symptoms of suicide were discovered on her person.