Israelis mourn Bulgaria bombing victims Oliver Weiken / EPA Relatives mourn five Israelis killed during an explosion on a tour bus in Burgas, Bulgaria, after their arrival at the Ben Gurion International Airport near Tel Aviv on July 20, 2012. Reuters reports - A suicide bomber carried out an attack that killed seven people in a bus transporting Israeli tourists in Bulgaria, the interior minister said on Thursday, and Israel said Iranian-backed Hezbollah militants were to blame. Ronen Zvulun / Reuters Friends and families of people killed in an attack in Bulgaria, stand near their coffins during a ceremony at Ben Gurion International Airport near Tel Aviv on July 20, 2012. A relative mourns five Israelis killed during an explosion on a tour bus in Burgas, Bulgaria, after their arrival at the Ben Gurion International Airport near Tel Aviv on July 20, 2012. Dan Balilty / AP An Israeli family cries during a military ceremony for victims killed in an attack in Bulgaria, at the Ben Gurion International Airport near Tel Aviv on July 20, 2012. Burgas airport security cameras caught the alleged terrorist wandering around a terminal minutes before he boarded a bus filled with tourists and allegedly blew himself up. Police are now trying to identify who he was with the help of DNA analysis.