An FBI informant testified Monday in Sacramento federal court that al-Qaida’s second-in-command, Ayman al-Zawahri, lived in Lodi during parts of 1998 and 1999. Naseem Khan, who is a critical prosecution witness in the trials of two Lodi men charged with having terrorist ties, testified he was living in Lodi in 1998 and 1999 and "every time I would go to the mosque (al-Zawahri) would be coming or going" from the mosque. Khan said al-Zawahri, known to the FBI as Osama bin Laden’s personal physician and top adviser, "disappeared" sometime in 1999.