Zubeidi himself traces his entry into armed militancy back to late 2001 when , after the killing of a close friend , he learned to become a bombmaker . Then , on 3 March 2002 , one month before the main assault on the refugee camp , his mother was killed during an Israeli raid into Jenin . She had taken refuge in a neighbor 's home and was shot by an IDF sniper who targeted her as she stood near a window . She subsequently bled to death . Zubeidi 's brother Taha was also killed by soldiers shortly afterward . A month later , a suicide bomber from Jenin killed 29 Israelis . The Israeli Army then launched a full-scale offensive in the Jenin refugee camp , demolishing hundreds of homes , leaving 2,000 homeless . Ten days of fighting ensued after which 52 Palestinians and 23 Israeli soldiers were dead
killed 29 Israelis
Passover massacre
Zakaria Zubeidi