In 2009 , Abdullah al-Asiri died when he detonated a bomb on his body with the intent of assassinating Saudi Prince Muhammed Bin Naif , a top security official . Abu Hassan al - Asiri is believed to be in Yemen . He grew up in Medina , Saudi Arabia . He followed his brother into a terrorist movement .
Abu Hassan al - Asiri is believed to be in Yemen . He grew up in Medina , Saudi Arabia . He followed his brother into a terrorist movement .