Philip the Arab
Before the projected campaign to capture Ctesiphon could get underway, Timesitheus died in obscure circumstances. The "SHA" asserts that Timesitheus was suffering from an attack of diarrhea and that Marcus Julius Philippus (Philip the Arab) succeeded in having his medication doctored, thus fatally inflaming the symptoms of his illness. This account is not found in the Greek sources and is not now generally accepted in academe. His death most likely was caused by dysentery. However, Philip the Arab and his brother, Gaius Julius Priscus, Timesitheus's co-Praetorian Prefect, were the chief beneficiaries of Timesitheus's death.