Dec. 10, 2003 Burns: PA's Gaza bombing probe not showing results By ASSOCIATED PRESS ROME The US envoy to the Middle East criticized the Palestinian investigation into the deadly bombing of an American diplomatic convoy in the Gaza Strip, saying Wednesday the lack of progress has hindered efforts to deliver aid to the Palestinian people. Three American security guards were killed in the Oct. 15 bombing. The diplomats in the convoy, escorted by Palestinian police, were heading to Gaza to interview Palestinian academics who were seeking Fulbright scholarships to teach or study in the United States. The Palestinians announced seven...