A top Filipino security official expressed concern Friday the on-going war in Lebanon could have spillover effect on the Philippines and the whole Southeast Asian region.

National Security Adviser Norberto Gonzales said he was calling an emergency meeting of top security and intelligence officials on the effect of the conflict between Israel and Hezbollah on the security of the Philippines.

"The new developments in the Middle East may trigger some kind of revival among the militants in our part of the globe, in our region and even in our own country," he said at a press conference.

He said a number of groups, including the Abu Sayyaf Group and the Rajah Solaiman Movement, which is a group of Muslim converts, breakaway forces of the secessionist Moro Islamic Liberation Frontand some renegade members of the Moro National Liberation Front, could react to the conflict by launching attacks in Manila.

"We are anticipating the spillover, that's why I said I am calling for an emergency meeting this afternoon so that we can discuss among our various intelligence units the situation obtaining in the ground and what needs to be done," he said.

Gonzales also said the ongoing military offensive against Abu Sayyaf chieftain Khadaffy Janjalani and two Jemaah Islamiyah cohorts in Sulu, southern Philippines, could lead to terrorists attacks in Metro Manila.

Aided by U.S. military intelligence, Philippine troops commenced the operation against Abu Sayyaf about a week ago in the jungles of Indanan and Patikul towns in Sulu, located about 900 kilometers south of Manila.

Military intelligence officials said Janjalani is in the company of Jemaah Islamiyah operatives Dulmaten and Omar Patek who fled to Mindanao after staging the bloody bombing in Bali, Indonesia in 2002 that left at least 200 people dead.

Meanwhile, Philippine airport police and government intelligence agents imposed utmost tight security at the international air terminals in Manila, banning liquid and gel particularly in U.S.-bound passenger planes.

Airport authorities said the heightened security alert at the Ninoy Aquino International Airport was set following alleged attempts by terrorists to bomb 10 U.S.-bound passenger planes at the London Heathrow Airport.