Est in carcere locus, quod Tullianum appellatur, ubi paululum adscenderis ad laevam, circiter duodecim pedes humi depressus. eum muniunt undique parietes atque insuper camera lapideis fornicibus iuncta; sed incultu, tenebris, odore foeda atque terribilis eius facies est. in eum locum postquam demissus est Lentulus, vindices rerum capitalium, quibus praecepta erat, laqueo gulam fregere. ita ille patricius ex gente clarissuma Corneliorum, qui consulare imperium Romae habuerat, dignum moribus factisque suis exitium vitae invenit. de Cethego Statilio Gabinio Caepario eodem modi supplicium sumptum est.
(Sallust, Bell. Cat. 55.3-6)
In the prison, when you have gone up a little to the left, there is a place called the Tullianum which is a depression of about twelve feet into the ground. Walls protect it on all sides and above there is a dome made with stone arches, but squalor, murk, and stench make it hideous and terrible to behold. After Lentulus was sent down into this place, the executioners strangled him with a rope as ordered. Thus that man, an aristocrat from the glorious family of the Cornelii, a man who had held consular power at Rome, found an end that suited his character and his actions. Cethegus, Statilius, Gabinius, and Caeparius were executed in the same way. (tr. William W. Batstone)