Cicero

But while this was going on, there chanced to be staying at Rome two ambassadors of the Allobroges, a nation which at that time was in a particularly evil plight and felt oppressed by the Roman sway. These men Lentulus and his partisans thought would be useful in stirring up Gaul to revolt, and therefore took them into the conspiracy. They also gave them letters to their senate, and letters to Catiline, making the senate promises of freedom and urging Catiline to set the slaves free and march upon Rome.

They also sent with them to Catiline a certain Titus of Croton, who was to carry the letters. But the conspirators were unbalanced men who seldom met together without wine and women, while Cicero was following their schemes industriously, with sober judgement and surpassing sagacity; he also had many men outside of their conspiracy who kept watch upon their doings and helped him track them down, and he conferred secretly and confidentially with many who were supposed to belong to the conspiracy; he therefore came to know of their conference with the strangers,

and, laying an ambush by night, he seized the man of Croton and his letters with the secret co-operation of the Allobroges.[*](Cf. Cicero, in Catil. iii. 2, 4-6. )

At break of day, then, he assembled the senate in the temple of Concord, read the letters aloud, and examined the informers. Silanus Junius also said that certain ones had heard Cethegus declare that three consuls and four praetors were going to be taken off. Piso, too, a man of consular dignity, brought in other reports of a like nature.