With Anzavur's defeat at Yahyaköy, another revolt had broken out in the Adapazarı region.[11] The leaders of this rebellion were (Berzeg) Safer, (Maan) Koc, and (Maan) Ali.[11] The missteps of nationalist forces allowed the scenario to play out similarly to the events of South Marmara.[11] The danger of the situation was recognized by the Nationalist government and ordered to be put down.[12] Ethem was called upon to do so, fresh from putting down Anzavur's rebellion. His forces retook Adapazarı and Sapanca without a fight.[12] On May 26, Ethem entered the town of Düzce and executed both (Berzeg) Safer, and (Maan) Koc; (Maan) Ali however managed to escape.[12]