Analysis of information sources in references of the Wikipedia article "Prusias I of Bithynia" in English language version.
He changed the name of the city to Prusias, instead of Cierus.
After these cities, he subjected Heracleia itself to a severe siege
and killed many of those who were besieged.
but while climbing a ladder Prusias was hit by a stone which was thrown from the battlements. He broke his leg, and because of this injury the siege was lifted
where he lived on for a few years before he died, being named (because of his injury) "the lame".
He had also seized their Asiatic territory, a part of Mysia which had long been in their possession.
Prusias, therefore, led an army against them, and after destroying all the men in a pitched battle, put to death nearly all the women and children in their camp and allowed his soldiers who had taken part in the battle to plunder the baggage.
And Prusias restored them from their ruins and named the city Cius "Prusias" after himself and Myrleia "Apameia" after his wife.
This all happened in Cyzicus after the peace with King Prusias.