Heavy fighting for each of the now isolated bunkers continued. Several assaults were repelled during the night and in the early morning of September 10. At approximately 11 o'clock, German engineers, with the help of tanks and artillery, finally managed to destroy all but two of the Polish bunkers. Both of them were located in the centre of Strękowa Góra and continued fighting despite having much of the crew wounded or incapacitated and most of their machine guns destroyed. After the war, the Poles insisted that Guderian, in an attempt to end the Polish resistance, threatened the Polish commander that he would shoot the POWs if the remaining forces did not surrender. The resistance, however, continued for another hour, when a German envoy arrived carrying a flag of truce and proposed a cease fire. It lasted until approximately 1:30 p.m. Raginis, realising that all of his men were wounded and his ammunition was almost depleted, ordered his men to surrender their arms to the Germans. He himself – seriously injured at the time – refused to surrender and committed suicide by placing a grenade between his chin and neck.