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." The
capitales were first established around 290 to 287 BC. They were supervised by the
praetor urbanus. These
triumviri, or the
tresviri nocturni (so called because they were on the streets at night), may also have taken some responsibility for
fire control. They went the rounds by night to maintain order, and among other things they assisted the in burning forbidden books. 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 (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. Their number were increased to four, but
Augustus reverted it to three. In
imperial times most of their functions passed into the hands of the . ==
Triumviri monetalis==