
Islamist  militias in Libya took control of nearly a dozen commercial jetliners  last month, and western intelligence agencies recently issued a warning  that the jets could be used in terrorist attacks across North Africa.
 
 Intelligence reports of the stolen jetliners were distributed  within the U.S. government over the past two weeks and included a  warning that one or more of the aircraft could be used in an attack  later this month on the date marking the anniversary of the Sept. 11,  2001, terrorist attacks against New York and Washington, said U.S.  officials familiar with the reports.
 
 “There are a number of commercial airliners in Libya that are  missing,” said one official. “We found out on September 11 what can  happen with hijacked planes.”
 
 The official said the aircraft are a serious counterterrorism  concern because reports of terrorist control over the Libyan airliners  come three weeks before the 13th anniversary of 9/11 attacks and the  second anniversary of the Libyan terrorist attack on the U.S. diplomatic  compound in Benghazi.
 
 Four Americans, including Ambassador Christopher Stevens, were  killed in the Benghazi attack, which the Obama administration initially  said was the result of a spontaneous demonstration against an  anti-Muslim video.
 
 A senior State Department counterterrorism official declined to comment on reports of the stolen jetliners.
 
 A second State department official sought to downplay the reports. “We can’t confirm that,” he said.
 
 Meanwhile, officials said Egyptian military forces appear to be  preparing to intervene in Libya to prevent the country from becoming a  failed state run by terrorists, many with ties to al Qaeda.
 
 Libya remains an oil-rich state and if the country is taken over  completely by Islamist extremists, U.S. counterterrorism officials  believe it will become another terrorist safe haven in the region.
 
 The officials said U.S. intelligence agencies have not confirmed  the aircraft theft following the takeover of Tripoli International  Airport in late August, and are attempting to locate all aircraft owned  by two Libyan state-owned airline companies, as security in the country  continued to deteriorate amid fighting between Islamists and  anti-Islamist militias.
 
 Video surfaced on Sunday showing armed fighters from the Islamist  militia group Libyan Dawn partying inside a captured U.S. diplomatic  compound in Tripoli. The footage showed one fighter diving into a pool  from a second-story balcony at the facility.
 
 Tripoli airport and at least seven aircraft were reported damaged  during fighting that began in July. Photos of the airport in the  aftermath showed a number of damaged aircraft. The airport has been  closed since mid-July.
 
 The state-owned Libyan Airlines fleet until this summer included  14 passenger and cargo jetliners, including seven Airbus 320s, one  Airbus 330, two French ATR-42 turboprop aircraft, and four Bombardier  CJR-900s. Libyan state-owned Afriqiyah Airways fleet is made up of 13  aircraft, including three Airbus 319s, seven Airbus 320s, two Airbus  330s, and one Airbus 340.
 
 The aircraft were reportedly taken in late August following the  takeover of Tripoli International Airport, located about 20 miles south  of the capital, by Libyan Dawn.
 
 Al Jazeera television reported in late August that western  intelligence reports had warned of terror threats to the region from 11  stolen commercial jets.
 
 In response, Tunisia stopped flights from other Libyan airports at  Tripoli, Sirte, and Misrata over concerns that jets from those airports  could be on suicide missions.
 
 Egypt’s government also halted flights to and from Libya.
 
 Military forces in North Africa, including those from Morocco,  Algeria, Tunisia, and Egypt have been placed on heightened alert as a  result of intelligence warning of the stolen aircraft.
 
 Egyptian military jets reportedly have conducted strikes inside  Libya against Libyan Dawn positions recently, and U.S. officials said  there are signs a larger Egyptian military incursion is being planned.
 
 Egyptian President Abdel-Fatah al-Sisi was quoted as denying  Egyptian air strikes into Libya have taken place but suggested that  military action is being considered.
 
 Secretary of State John Kerry last week told his Egyptian  counterpart that the United States would speed up the delivery of Apache  attack helicopters, although it is not clear the Apaches would be used  in any Libyan operations.
 
 Egypt’s military-backed government appears to be seeking a more  significant role in regional security after the Obama administration  helped engineer the ouster of Libyan strongman Moammar Qaddafi in 2011.  Since then, the Obama  administration, through its announced policy of  “leading from behind,” has stood by while Libya gradually has spiraled  into chaos.
 
 The Libyan government announced Sunday that it no longer controlled the capital of Tripoli.
 
 “We announce that the majority of the ministries, institutions,  and associations in the capital Tripoli are no longer under its  control,” a government statement said.
 
 Libya’s parliament in August declared both Ansar al Sharia and  Libyan Dawn as terrorist organizations working to overthrow the  government.
 
 Ansar al Sharia, which is based in Benghazi, recently publicized  on social media that it has obtained large numbers of more sophisticated  weapons, including SA-6 surface-to-air missiles, anti-aircraft guns,  rocket-propelled grenades, shoulder-fired anti-aircraft missiles,  assault rifles, and armored vehicles. The group is closely aligned with  al Qaeda-linked rebels in Syria.
 
 Abderrahmane Mekkaoui, a Moroccan military expert, told Al Jazeera  television, which first reported the airline theft Aug. 21, the alert  regarding the stolen jetliners was preventive and covers the region from  Cairo to Lagos Nigeria.
 
 Mekkaoui said the jets are being held by the Libyan group called  Masked Men Brigade, which was designated as a foreign terrorist  organization by the State Department in December.
 
 The Masked Men Brigade is linked to al Qaeda and Ansar al  Sharia—the group behind the Benghazi terrorist attacks of Sept. 11,  2012.
 
 Until the Libya Dawn takeover of the airport, announced Aug. 24,  two other militia groups, known as Al Qaqa and Al Sawa controlled the  airport and all aircraft belonging to Libyan Airlines and Afriqiyah  Airways.
 
 Mekkaoui said “credible intelligence” reports given to states in  the region indicated the Masked Men Brigade “is plotting to use the  planes in attacks on a Maghreb state” on the 9/11 anniversary.
 
 Counterterrorism expert Sebastian Gorka said that if the theft is  confirmed, the stolen aircraft could be used in at least two ways.
 
 “The first would be how commercial airliners were used on Sept.  11, 2001, literally turning an innocent mode of mass transit into a  super-high precision guided missile of immense potency,” said Gorka, who  holds the Maj. Gen. Charles Horner chair at Marine Corps University in  Quantico, Va.
 
 “The second tactic could be to use the airframe with its civilian  markings as a tool of deception to insert a full payload of armed  terrorists into a locale that otherwise is always open to commercial  carriers,” he said.
 
 Michael Rubin, a counterterrorism specialist with the American  Enterprise Institute, said commercial jetliners in the hands of  terrorists could be formidable weapons.
 
 “Who needs ballistic missiles when you have passenger planes? Even  empty, but loaded up with fuel they can be as devastating,” Rubin said.
 
 “Each plane could, if deployed by terrorists to maximum devastating effect, represent 1,000 civilian casualties.”
 
 Among the potential targets are urban areas and economic targets, like Saudi Arabia’s oil fields.
 
 “Anyone who has ever flown over Saudi Arabia at night can see  refineries like Yanbu lit up like Christmas trees against the blackness  of the desert,” Rubin said. “One Saudi security officer once told me  that they would only have about 90 seconds to shoot down a hijacked  plane from the time it left international airspace to impact in one of  the region’s most important refineries.”
 
 Rubin said in 2003 a Boeing 727 went missing in Africa fueling  concerns about a terror attack on the U.S. consulate in Karachi.
 
 “What is striking is that more than a decade later, the United  States hasn’t taken the need to safeguard what are effectively giant  guided missiles seriously,” he said.
 
 A former Libyan general, Khalifa Haftar, has been leading  anti-Islamist forces. His group has access to Libyan air force MiG jets  that have conducted strikes on Libyan Dawn positions in recent days.  Haftar also has conducted military raids in Benghazi.
 
 The United Nations Security Council on Aug. 27 announced plans for  new sanctions on Libyan militias and terrorists. In a resolution the  U.N. warned of the “growing presence of al Qaeda-linked terrorist groups  and individuals operating in Libya.”