4. Ayman al-Zawahiri
Ayman al-Zawahiri was born in 1951 was among the members of the Islamist organization, al-Qaeda who were responsible for organizing numerous attacks in Asia, Africa, middle east and north America. He comes from Egypt and has assumed the role of being the leader of al Qaeda after the death of Osama bin laden. Due his continued involvement of al Qaeda, Ayman has been declared in the list of the most wanted criminals by the FBI. A huge prize of $25million has been set aside for whoever who shall provide the information that might lead his capture.