Compact discs containing Al Qaeda leader Osama bin Laden's speeches, urging Muslims to join the 'Jehad' (holy war), have surfaced in the rural pockets of Patna and adjoining Bhojpur districts in Bihar.

The CDs, in Arabic language with English subtitles, liberally interspersed with exhortations by Laden to the Muslims to join Jehad, have footage of Al Qaeda and Taliban camps showing militants undergoing training in guerrilla warfare.

It is yet to be known how the Al Qaeda propaganda material made its way to Bihar.

"I have been shown the CD and our experts will analyse it before I can make any comment," IG (headquarters) Anil Sinha said.

Bihar's links with terror outfits are not completely unknown as two suspects of last July's Mumbai train blasts -- Kamal Ansari and Khalid --  were arrested from Madhubani district in Bihar.