American-born terrorist Adam Gadahn was recently arrested in Pakistan, according to senior officials in Islamabad. The arrest took place shortly after Gadahn sent out a message calling for “lone wolf” terrorist attacks in the United States, Britain and Israel.

Gadahn, also known as “Azzam al-Amriki,” is a California native who has become a senior leader in the international terrorist group Al-Qaeda.

Al-Qaeda operatives released on Sunday a 25-minute video featuring Gadahn. In the film, titled “A Call to Arms,” Gadahn praised Nidal Hassan, an American Muslim soldier charged with murdering 13 people in a shooting spree at the Fort Hood army base.

Hassan “has shown the way forward for every Muslim who finds himself among the unbelievers,” Gadahn declared. He called on Muslims living in the “Zionist-Crusader alliance,” and in the Uniited State, Britain and Israel in particular, to carry out similar attacks.

Gadahn also accused the United States of operating “Muslim-only concentration camps” in the state of Illinois, an apparent reference to the transfer of terror suspects to an Illinois prison.

Gadahn has been wanted by the FBI since 2004 and was charged with treason in 2006 for joining Al-Qaeda. There is a $1 million reward for information leading to his arrest.