As the first siege ladders reached the walls, Bihać's judges and councilors asked Lamberg to start negotiations with Hasan Pasha, saying that the defenders were too weak to withstand the assault and there were no reinforcements. Lamberg was compelled to negotiate an honourable surrender and together with three judges went to Hasan Pasha's tent. Ottoman conditions were an immediate surrender of Bihać, but they assured that its citizens would be allowed to leave with their property or remain and acknowledge Ottoman rule.