The U.S. Department of Justice says a Saudi-born Canadian citizen was sentenced to life in prison for conspiring to provide support resulting in death to the terrorist organization ISIS.

The Department of Justice statement says Mohammed Khalifa, pleaded guilty in December to a charge of conspiring to provide material or resources to a foreign terrorist organization, resulting in death.

The statement says Khalifa was a lead Islamic State propaganda official who served as the English-speaking narrator on more than a dozen violent ISIS videos.

It says he played a key role in the group’s successful efforts to recruit tens of thousands of foreign fighters to defend its self-proclaimed caliphate in Iraq and Syria.