Hamas' minister, Said Siam, considered one of the most senior members of the Palestinian group's leadership, was killed on 15 January 2009 afternoon in an Israeli air strike on his brother's home in Gaza City. Siam, 50, is the most senior Hamas figure was killed in Operation Cast Lead so far, and is the most senior Hamas figure killed by Israel since the assassination of Dr. Abdel Aziz al-Rantisi in April 2004.