He fell in with Abu Bakar Bashir , the spiritual head of Jemaah Islamiyah , who was then in exile in Malaysia , and Riduan Isamuddin , better known as Hambali , who was Al Qaeda 's senior operative in Southeast Asia .
Southeast Asia
Malaysia
/location/location/contains
PERSON
Abu Bakar Bashir
LOCATION
Malaysia
LOCATION
Riduan Isamuddin
LOCATION
Southeast Asia