In the last 50 years, the FBI has had its hands full. From Puerto Rican separatists to Marxists to Islamic terrorists, the bureau has investigated and apprehended a number of threats to US civilians from around the globe.
Despite the their efforts, however, a number of suspects remain at large.
In a bid to streamline the FBI's efforts, the investigative agency has compiled a list of the most wanted terrorists and the most wanted domestic terrorists. We highlighted the most interesting suspects.
Ayman Al-Zawahiri

Zawahiri is the current leader of al Qaeda. Formerly an Egyptian physician, he founded the Egyptian Islamic Jihad (EIJ) before merging the group with al Qaeda in 1998. The FBI is currently seeking Zawahiri for his role in the bombing of the US embassies in Dar es Salaam, Tanzania and Nairobi, Kenya on August 7, 1998.
Zawahiri is 63-years-old. The US Department of State is offering a reward of up to $25 million for information leading to his arrest.
Jamel Ahmed Mohammed Ali Al-Badawi

Al-Badawi is wanted in connection with the the 2000 bombing of the USS Cole in Aden, Yemen, which killed 17 American sailors. the Yemeni authorities had previously arrested him twice, but he escaped from prison in both April 2003 and February 2006.
The US Department of State is currently offering a $5 million reward for information leading to the apprehension of Badawi. He is considered armed and dangerous.
Husayn Muhammad Al-Umari

Al-Umari, also known as "The Bomb Man," is wanted for his role in the August 11, 1982 bombing of Pan Am Flight 830, which killed a 16-year-old and injured an additional 16 passengers on a flight from Japan to Hawaii. Umari formed the 15 May Organization, which promoted the Palestinian cause by carrying out violence against supporters of Israel.
Umari is 79-years-old and is believed to be in Lebanon. The State Department is offering a $5 million reward for his capture, and the Department of Defense is offering an additional $200,000 for information as to his whereabouts. He is apparently a fan of Cuban cigars.
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