Vice president Hamzah Haz said that he was not sure of the involvement of international terrorist groups or the al-Qaeda network in last month's bombings in Bali, El Shinta radio station reported.

Hamzah's remarks were quoted by the head of the Indonesian Islamic Student (PII), Zulfikar, following a meeting at the Vice Presidential palace.

"He argued that the Bali bombings occurred in an entertainment destination instead of an economic symbol, like what had happened in the United States," Zulfikar said, referring to the September 11 attacks.

Hamzah has maintained his denial of possible terrorist network in Indonesia, even after last month's Bali bombing tragedy which killed at least 180 people and injured hundreds of others.