(Reuters)
Updated: 2007-09-20 16:28

CAIRO - Osama bin Laden will release a new message soon declaring war on Pakistani President Gen. Pervez Musharraf, al-Qaida announced Thursday.

A frame grab of a video released on September 2, 2006 shows Al Qaeda's second-in-command Ayman al-Zawahri speaking. Zawahri called on Muslims to fight the United States and its allies around the world in a new video aired on Thursday. [Reuters]

The announcement of the upcoming message came as al-Qaida released a new video in which bin Laden's deputy boasted that the United States was being defeated in Afghanistan, Iraq and other fronts.

Speakers in the video promised more fighting in Afghanistan, North Africa and Sudan's Darfur region.

The messages are part of a stepped-up propaganda campaign by al-Qaida around the anniversary of the Sept. 11, 2001 attacks against the World Trade Center and the Pentagon.

Earlier this month, bin Laden released two messages -- including his first new appearance in a video in nearly three years.

A banner posted on an Islamic militant website Thursday advertised that another message would be released, though it did not say whether bin Laden would appear in video or speak in an audiotape.

"Soon, God willing: 'Come to Jihad (holy war)', from sheik Osama bin Laden, God protect him" the banner read.

"Urgent, al-Qaida declares war on the tyrant Pervez Musharraf and his apostate army, in the words of Osama bin Laden," it read.

Such advertisements usually precede the release of the video by one to three days, according to IntelCenter, a US counterterrorism group that monitors militant videos.