He’s a warrior. He’s a poet. He’s a scholar. He’s a pundit. He’s a military commander. And he’s a very charismatic, young, brash rising star within Al-Qaeda, and I think he has become the heir apparent to Osama bin Laden in terms of taking over the entire global jihadist movement.
Scheuer states of him that he "in the last year or so emerged as al-Qaeda's theological hardliner" and an "insurgent-theologian". He was also an official on al-Qaeda's Shariah Committee.
Al-Libi went to Afghanistan in the early 1990s and whilst bin Laden was an engineer and al-Zwahiri a doctor, al-Libi is said to have been an Islamic scholar who "spent two years in Africa studying Islam". It is believed that after going to Afghanistan in the 1990s, he "was sent back to northern Africa to study Islam in Mauritania."
As detailed below, he was imprisoned by both Pakistani and U.S. authorities. He claimed to have studied Islamic law, history and jurisprudence "for years among excellent and great scholars" who were in the field with al-Qaeda and other Islamist insurgent groups.
It is stated that "When he returned two years later" [from his Islamic studies in Mauritania, Africa], "Afghanistan was no longer a battleground for militant Libyans, but rather a haven: the Taliban controlled most of the country. Mr. Libi's training in warfare was minimal, and his early work as a preacher rarely touched on militant action, according to the Libyan man who said he had met Mr. Libi in Afghanistan, and who spoke on condition of anonymity out of security concerns. "He started to visit training camps and talk about Shariah," or Islamic law, this man said in a telephone interview, about "morals, etiquette, how to act."
Al-Libi was one of several high-profile Bagram captives who escaped on the night of July 10, 2005.
Early reports on the 2005 escape fromBagram Airbase included al-Libi's name as one of the escapees.
Posters around the airbase identified "the Libyan, Mohammad Hassan Abu Bakar" as one of the escapees, but did not mention high-ranking al-Qaeda leader Omar al-Faruq as one of the escapees. Later reports removed the Libyan from the list of escapes and inserted al-Faruq.
On November 4, 2005, al-Libi appeared in a Ramadan video on the Arabic television station al-Arabiya, and mentioned that he had escaped from Bagram.
He was re-listed as an escapee, and as of October 2006 was listed among the Department of Defense's "Most Wanted", and a Terrorist Recognition Card repeated the earlier claim that he was indeed among the four escapees. In addition, the name off the Airbase posters was added as an "alias".
Al-Libi produced a series of propaganda videos.
On May 30, 2007 a 45-minute video, starring al-Libi came to light.
On June 22, 2008 Abu Yahia Al Libi released a 19-minute video urging Somalis to resist United Nations forces in Somalia.
Bryant Neal Vinas, an American, took part in 2008 with other masked fighters in an al-Qaeda propaganda video featuring al Libi. Vinas was captured in November 2008, and pleaded guilty in January to conspiracy to murder and to receiving military training from Al Qaeda murder and providing them with material support.
Al-Libi also appeared in a July 2009 video from al-Sahab entitled, "Swat: Victory or Martyrdom," about the Pakistani military's campaign against Pashtun militias and jihadi groups in the Swat Valley. On March 12, 2011 al-Libi urged his countrymen to overthrow Muammar Gaddafi's regime and establish Islamic rule, expanding the terror network's attempts to capitalize on the wave of unrest sweeping the region. That was put on in a video posted on a militant website.
TIP's "Islamic Turkistan" magazine in its 5th edition published an article by Al Qaeda member Abu Yayha al Libi who wrote in support of "Turkistan".
Al-Qaeda member Abu Yahya al-Libi spoke in support of "Jihad" in "East Turkestan" against China.
Dec 16, 2005 – Names and Information of Twelve Detainees in Bagram Prison in Afghanistan from Sheikh Abu Yehia al-Libi 
Dec 21, 2005 – Eid al-Fitr Sermon 2005 Eid al-Fitr Sermon by Abu Yehia al-Libi and Scene of Mujahideen Training Exercises 
Dec 21, 2005 – A Letter to Abu Musab al-Zarqaw from Abu Yehia al-Libi 
Dec 27, 2005 – Jihad or Resistance – An Examination of the Exchanging Terms from Islamic Law for Secular, Western Terms by Abu Yehia al-Libi 
Mar 7, 2006 – A Discussion Concerning the Facts and Claims of Extremism Within Islam by Abu Yehia al-Libi 
Apr 17, 2006 – Hamas and the Impending Exposure by Abu Yehia al-Libi 
Abu Yahya al-Libi on Jun 17, 2006 (English Subtitles)
June 2005 – As-Sahab Interview with Abu Yahya al-Libi 
Light & Fire in Eulogizing the Martyr Abu Musab al-Zarqawi (English Subtitles)
Jul 26, 2006 – Labik Video Production: “They Are Coming,” of Mujahideen Training Exercises in Afghanistan and Speeches from Abu Yehia al-Libi 
Jul 31, 2006 – As-Sahab Video Eulogy from Abu Yehia al-Libi for Abu Musab al-Zarqawi 
Combat, Not Compromise (English Subtitles) transcript
Oct 27, 2006 – “The Infidel Karzai Regime and the Necessity of War” 
Nov 2, 2006 – Abu Yahya al-Libi Video Eulogy for Faruq al-Iraqi Produced by as-Sahab 
Dec 26, 2006 – Our Battle Between Intensity [of the Past] and the Caution of Tomorrow 
Feb 1, 2007 – And the Crusade Continues... The AIDs Children in Libya (English Subtitles) 
Feb 12, 2007 – Labik Productions Presents Selected Pictures of a Shari’a Course Led by Abu Yahya al-Libi in a Mujahideen Training Center 
Feb 8, 2007 – The Adha Holiday Sermon 1427H
Mar 22, 2007 – Iraq: Between Indications of Victory and Conspiratorial Intrigues (English Subtitles) 
Mar 25, 2007 – To the Army of Difficulty in Somalia (English Subtitles) 
Apr 30, 2007 – Palestine, an Alarming Scream and a Warning Cry 
May 30, 2007 – The Tawheed of Saud... and the True Tawheed (English Subtitles) 
Jun 6, 2007 – Eulogy for Mullah Dadullah (Eulogy for Taliban Commander Mullah Dadullah)
Jul 31, 2007 – The Masters of the Martyrs (Of the Masters of Martyrs) 
Sep 9, 2007 – Dots on the Letters (English Subtitles) [As-Sahab Second Interview with Shaykh abu Yahia Al-Libi] 
Nov 7, 2007 – The Closing Statement for the Religious Training that was Held at One of the Mujahideen Centers (Final Session of the Shari’a Course Held at a Mujahideen Center). Video. The transcript of this speech is titled 'Balancing Between Jihad and Seeking Knowledge'. Transcript (Apr 19, 2008 – [Eid al-Adha 1428]). video and transcript links, SITE Intel Group on speech
It was reported by Pakistani sources on December 11, 2009 that Abu Yahya al-Libi was killed in a U.S Drone strike in Pakistan; however, later reports identified the man killed as Saleh al-Somali.
On June 5, 2012, U.S. officials confirmed that Libi was among 15 militants killed the previous day when a US drone fired four missiles at a compound in Mir Ali, North Waziristan. Additionally, The White House later confirmed it. His death was later confirmed by al-Qaeda leader Ayman al-Zawahiri in a video released in September 2012 to coincide with the 9/11 anniversary.