Vigiles

At the end of June, a mob demonstrated against Cleander during a horse race in the Circus Maximus : he sent the praetorian guard to put down the disturbances, but Pertinax, who was now City Prefect of Rome, dispatched the Vigiles Urbani to oppose them.

The vigiles were supported by the Urban Cohorts who acted as a heavy-duty anti-riot force and even the Praetorian Guard if necessary.