[Abdur] Rauf's money demands may have led to a falling-out with Zawahiri, who appears to have decided to explore other options for obtaining bacteria and lab equipment, said Rohan Gunaratna, an al-Qaeda expert with the Institute of Defense and Strategic Studies in Singapore. Gunaratna said al-Qaeda leaders also collaborated with Yazid Sufaat, a member of an allied Southeast Asian group called Jemaah Islamiyah, in purchasing equipment for the Kandahar lab. Sufaat, who once studied chemistry at California State University at Sacramento, has been in custody since late 2001.
"Rauf was financially driven, and al-Qaeda didn't entirely trust him," Gunaratna said.
------- "Suspect and A Setback In Al-Qaeda Anthrax Case - Scientist With Ties To Group Goes Free," by Joby Warrick, Washington Post, October 31, 2006