'Authorities do not yet have a motive.'

'Authorities do not yet have a motive.' - Really?

Yahoo News report that:

'The passengers sat stunned as they watched a man walk quickly toward the front of American Airlines Flight 1561 as it was descending toward San Francisco. He was screaming and then began pounding on the cockpit door.

Within moments Sunday, a flight attendant tackled Rageh Almurisi. Authorities do not yet have a motive.

While Almurisi, 28, of Vallejo, Calif., has no clear or known ties to terrorism, authorities say, the incident underscored fears that extremists may try to mount attacks to retaliate for the death of al-Qaida leader Osama bin Laden last week.

Federal agents are investigating Almurisi’s background. He was carrying a Yemeni passport and a California identification card, authorities said.

...

Almurisi went toward the cockpit door 30 minutes before the flight from Chicago was supposed to land on Sunday night, San Francisco airport police Sgt. Michael Rodriguez said. Almurisi was yelling unintelligibly as he brushed past a flight attendant.

Marty, 35, recalled Monday that she and other passengers on the plane were stunned when they saw Almurisi walking down the aisle. She said a woman in a row across from her who speaks Arabic translated that Almurisi said “God is Great!” in Arabic.

Wai, 27, also remembered on Monday that the wife of one of the men who took Almurisi down later said Almurisi was yelling “Allahu Akbar.”'

I agree it's mysterious; what possible motive could a man screaming "Allahu Akbar" have for trying to force his way into an aircraft cockpit? It's a total bloody mystery!