The investigation confirms what was previously suspected.

WASHINGTON ([1] CNN) -- U.S. intelligence officials say a videotape obtained last month in Pakistan by ABC News appears to have been made by an American wanted for questioning in connection with possible al Qaeda threats.

Intelligence officials now say they believe the man threatening terrorism against the United States on the tape is Adam Gadahn, a young Californian who converted to Islam and left the United States.

Al Qaeda don't surf, Adam. You have backed the wrong horse.