[cnn-photo-caption image= http://i.cdn.turner.com/cnn/2010/WORLD/asiapcf/03/08/pakistan.alqaeda.american/story.gadhan.jpg caption="Conflicting reports swirled around a possible arrest of al Qaeda spokesman Adam Gadahn."]
(CNN) - Conflicting reports emerged Sunday over whether Adam Gadahn, a U.S.-born spokesman for al Qaeda, has been arrested in Pakistan.
While a senior Pakistani government official said that Gadahn was arrested Sunday in Karachi - and a second senior Pakistani government official later confirmed Gadahn's arrest - a U.S. intelligence official said there appears to be no validity to the reports that Gadahn was in custody. Other U.S. officials also said they have no indication that Gadahn has been captured.
Gadahn, also known as Azzam the American, was indicted on charges of treason and providing material support to terrorists in 2006. The U.S. government has offered a $1 million reward for information leading to his capture.
Reports of the arrest came hours after Islamist Web sites posted video of Gadahn praising the November massacre at Fort Hood, Texas. On the video, Gadahn said the Army major charged with gunning down 13 people "lit a path" for other Muslim servicemembers to follow.
Authorities have targeted several key Islamist figures in Karachi - the heavily populated port city and financial capital of Pakistan that, for some time, has functioned as a hideout for Taliban and al Qaeda sympathizers. FULL STORY