The Second Triumvirate or tresviri reipublicae constituendae of Octavian (later Augustus), Mark Antony, and Marcus Aemilius Lepidus was formed in 43 BC by passage of the lex Titia.
The triumviri capitales oversaw prisons and executions, along with other functions that, as Andrew Lintott notes, show them to have been "a mixture of police superintendents and justices of the peace.
[citation needed] It is possible that they were entrusted by the praetor with the settlement of certain civil processes of a semi-criminal nature, in which private citizens acted as prosecutors.
They also had to collect the sacramenta (deposits forfeited by the losing party in a suit) and examined the plea of exemption put forward by those who refused to act as jurymen.
[6] Triumviri mensarii served as public bankers;[7] the full range of their financial functions in 216 BC, when the commission included two men of consular rank, has been the subject of debate.