Usama bin Laden claimed responsibility for the failed attempt to bomb a Detroit-bound airliner on Christmas day, releasing a new audio message Sunday threatening more attacks on the United States.
A senior U.S. intelligence official in Washington called the latest message "curious," commenting that the tape is uncharacteristically brief it and shows efforts by bin Laden to attach himself to Palestine's cause.
The official also said there is no evidence that bin Laden had any involvement on the Christmas Day attack — or even knew about it beforehand — but that perhaps the leader hopes to attach himself with a "successful" operation by Al Qaeda. The message suggests the Al Qaeda leader wants to appear in direct command of the terrorist group's many affiliates around the world at a time when some analysts have suggested he is mostly a figurehead.
In the minute-long recording carried by Al-Jazeera Arabic news channel, bin Laden addressed President Obama saying the Christmas attack was meant to send a message similar to that of the Sept. 11 attacks.
"The message delivered to you through the plane of the heroic warrior Umar Farouk Abdulmutallab was a confirmation of the previous messages sent by the heroes of the Sept. 11," he said. "America will never dream of security unless we will have it in reality in Palestine," he added.
"God willing, our raids on you will continue as long as your support for the Israelis continues."
White House Press Secretary Robert Gibbs said the tape has yet to be authenticated, but wouldn't offer an opinion on whether bin Laden had any role in the Christmas Day bombing
"I think everybody in this world understands that this is somebody that has to pop up in our lives over an audio tape because he's nothing but a cowardly, murderous thug and a terrorist that will someday, hopefully soon, be brought to justice," Gibbs told "Fox News Sunday."
On Christmas Day, Nigerian Abdulmutallab attempted to blow up his Northwest Airlines flight as it approached Detroit Metro Airport. But the explosive powder he was hiding in his underwear failed to detonate.
He told federal agents shortly afterward that he had been trained and given the explosives by Al Qaeda in the Arabian Peninsula, an Al Qaeda affiliate in Yemen.
The U.S. intelligence official said the Yemen-based group is linked with the central Al Qaeda group that bin Laden heads and recent intelligence indicates there are ongoing contacts between Al Qaeda in Yemen and Pakistan. He spoke on condition of anonymity because of the sensitive nature of the information.
Bin Laden's message, coming long after AQAP gave its own claim of responsibility, appears to be an effort on his part to stay relevant, said Rohan Gunaratna, author of "Inside Al Qaeda: Global Network of Terror."
"The training and the definition of the attack was by the local leaders of Al Qaeda in the Arabian Peninsula, so in many ways you can say bin Laden is exploiting for his benefit this particular attack," he said. "Bin Laden still wants to claim leadership for the global jihad movement."
Of all the various offshoots and branches of Al Qaeda around the world, Gunaratna said the group in Yemen is one of the closest to bin Laden since it is made up of bodyguards and associates of the organization's top ideologues. Yemen is bin Laden's ancestral homeland.
"Today the operational relationship has somewhat suffered, but the ideological relationship is very strong and that is why bin Laden claimed this attack," Gunaratna said.
Two of the group's top members were former detainees released in November 2007 from the U.S. military prison Guantanamo Bay.
Since the Christmas Day attempt, the Yemeni government, at the U.S.'s urging has stepped up its attacks on the group's hideouts in the rugged country's remote hinterland.
Analysts have long debated how much control bin Laden, who is believed to be somewhere in Afghanistan-Pakistan border region, really has over the various organizations using his group's name.
The Yemen-based group, however, has closer ties than most to bin Laden and his key lieutenants, many having once been their bodyguards.
There was no way to confirm the voice on the audio message was actually that of bin Laden, but it resembled previous recordings attributed to him.
In the past year, bin Laden's messages have concentrated heavily on the situation of the Palestinians in attempt to rally support from Muslims around the world.
Some analysts say bin Laden is focusing on the close U.S.-Israeli relationship because he is worried about Obama's popularity across the Middle East with his promises to withdraw from Iraq and because his father was a Muslim from the African nation of Kenya.
The plight of the Palestinians, especially in the blockaded Gaza Strip where 1,400 were killed in an Israeli offensive a year ago, angers many in the Arab world.
"The Palestinian conflict was never part of the Al Qaeda original mandate, but Usama is clearly exploiting it," Gunaratna said.
Israeli Foreign Ministry spokesman Andy David dismissed the latest Al Qaeda message and its attempt to link Israel with attacks on the U.S.
"This is nothing new. He has said this before," he said. "Terrorists always look for absurd excuses for their despicable deeds."
The last public message from bin Laden appears to have been on Sept. 26, when he demanded that European countries pull their troops out of Afghanistan. The order came in an audiotape that also warned of "retaliation" against nations that are allied with the United States in fighting the war.
Fox News' Catherine Herridge and the Associated Press contributed to this report.