A case of mistaken identity is causing confusion in the war on terror.
Pakistani officials say they're holding an American member of al Qaeda, but not who they originally thought.
The Pakistanis first said they'd captured Adam Gadahn-- a 31-year-old U.S.-born spokesman for al Qaeda. Now, they say it is another American with "Adam" in his Arabic Muslim name -- Abu Yahya Majadin al-Adam -- but not Gadahn.
CBN News spoke with terrorism expert Daveed Gartenstein-Ross about the recent capture in Pakistan and the revelation of U.S. Muslim citizens joining al Qaeda. Click play for his comments.
Gadahn has appeared in several videos threatening the West since 2001, including a new video released Sunday. It praises U.S Army Major Nidal Hassan, who is accused of killing 13 people and wounding 30 at Fort Hood in Texas last November.
"The Mujahid brother Nidal Hasan is a pioneer, a trailblazer and a role-model who has opened a door, lit a path and shown the way forward for every Muslim who finds himself among the unbelievers," he said.
"I believe that defiant brother Nidal is the ideal role-model for every repentant Muslim in the armies of the unbelievers and apostate regimes," Gadahn continued.
He grew up in rural California, converted to Islam in the mid-1990s, moved to Pakistan and began appearing in al Qaeda videos. Gadahn, who has said his grandfather was Jewish, has called on fellow Muslims for "weapons, funds and Jihad against the Jews and their allies everywhere."
"I am calling on every honest and vigilant Muslim in the countries of the Zionist-Crusader alliance in general and America, Britain and Israel in particular to prepare to play his due role in responding to and repelling the aggression of the enemies of Islam," he said in the video.
The arrest of an American militant in Pakistan other than Gadahn would be yet another instance of a U.S. Muslim citizen traveling abroad to join al Qaeda and the Taliban.
In December, Pakistani police arrested five young U.S. Muslims who they allege were trying to link up with terrorists.