[3] Polybius states he had other relations who served the Ptolemaic dynasty: Nico or Nicon, a nauarch under Ptolemy IV;[4] Philo[5] and Philammon, appointed Libyarch of Cyrene by himself.
According to surviving inscriptions in 216/215 BC, Agathocles served as eponymous priest of the Ptolemaic cult of Alexander the Great.
[7] On the death of Ptolemy IV in 204 BC, Agathocles and his allies kept the event secret, that they might have an opportunity to plunder the royal treasury.
They also formed a conspiracy with Sosibius aimed at placing Agathocles on the throne or at least making him regent for the new boy king, Ptolemy V Epiphanes.
In 203/202 BC, the Egyptians and the Greeks of Alexandria, exasperated at Agathocles' outrages, rose against him, and the military governor Tlepolemus placed himself at their head.