Hundreds of young Palestinians, however, ignored warnings by the organizers and the Israeli military to avoid the border zone.[74] Some began throwing stones and Molotov cocktails, to which Israel responded by declaring the Gaza border zone a closed military zone and opening fire at them.[55] The events of the day were some of the most violent in recent years.[75] In one incident, two Palestinian gunmen approached the fence, armed with AK-47 assault rifles and hand grenades, and exchanged fire with IDF soldiers. They were killed and their bodies were recovered by the IDF.