Titus Petronius Secundus (died 97 AD) was a prefect of the Roman imperial bodyguard, known as the Praetorian Guard, under emperor Domitian, from 94 until 96.
[1] While governor of Egypt, Petronius is attested as hearing the Colossi of Memnon sing, one of many ancient Romans known to have witnessed this phenomenon.
Brian Jones notes that although "the support of the praetorian prefects would obviously be one of the primary concerns of any would-be imperial assassin, ancient sources are nowhere near as unanimous as their modern counterparts in claiming" that Petronius was among a number of government officials involved.
[3] Suetonius fails to implicate either Petronius or his colleague Titus Flavius Norbanus in his account of Domitian's death.
Cassius Dio simply writes that "it was said that" Domitian's wife and both prefects were aware of the plot.