MANILA, JAN. 24 -- A bungled anti-U.S. bombing by two Iraqis here has prompted a scramble among Philippine and Western intelligence agencies to unravel what they suspect is a vast Iraqi-sponsored terrorist network in Asia.

An investigation into the Jan. 19 explosion, in which one Iraqi was killed and another wounded while trying to plant a bomb, has implicated two Iraqi students and two Iraqi diplomats. Investigators said the diplomats have been identified as agents of Iraq's intelligence service.

One of them, Muwafak Ani, who held the post of consul general, was expelled today after authorities linked him to the attempt to bomb the U.S. government's Thomas Jefferson Cultural Center in this capital's Makati financial district.

"As far as my diplomatic career is concerned, it is finished. I am going to be a fighter," Ani told reporters at Manila's airport before taking a flight to Malaysia on his way to the Middle East. He denied any connection with the bombing. As he boarded the plane, he flashed a victory sign and shouted, "Long live Saddam Hussein!" Ani served in Kuwait, Washington and Libya before he was assigned to Manila in mid-1989.

The bombing, the first terrorist attack that has been solidly linked to the Iraqi government since the war began, suggests that Iraq is trying to make use of a broad intelligence network that it set up in the 1980s to procure high technology and weapons systems and otherwise promote its interests abroad during its war with Iran, intelligence sources said.

"You're looking at a government that is turning its intelligence service into a terrorist network," a Western analyst said.

"This thing is quite big," another foreign intelligence official said. "The Iraqis have their tentacles spread out a long way. They've tried to contact everyone they can to support them.

"We're dealing with a well-organized, internationally deployed group of terrorists coming out of Iraq. We probably made a mistake early on by saying that Southeast Asia and South Asia would not be targeted. But they {the Iraqis} have got people all over the world." He predicted further terrorist attacks.

Western intelligence agencies suspect Iraq of using its embassies in Manila and Bangkok to smuggle in arms and explosives in diplomatic bags for use in terrorist attacks. In Thailand, the military went on alert last weekend after it received reports that the materiel had been distributed to unknown operatives.

Several thousand Thai troops have been deployed to protect more than 80 buildings in Bangkok, including the embassies of the United States and its allies, airline offices, banks and other possible targets. Thai authorities expelled four Iraqis Wednesday, among them the Iraqi Embassy's commercial counselor and another diplomat, and arrested four suspected Arab terrorists -- two Iraqis and two Jordanians -- on immigration charges. Thai police were reported looking for six other suspected Middle Eastern terrorists.

According to Philippine and foreign sources, the Iraqis have sought the support of Communist rebels here, student and leftist groups opposed to the presence of U.S. military bases, and terrorist groups such as the Japanese Red Army.

At least eight suspected Japanese Red Army members have been put on a Philippine watchlist after an intelligence report warned that they were trying to enter the country on a mission for Iraq, Immigration Commissioner Andrea Domingo said. She said the eight reportedly attended a conference of foreign guerrilla groups in Baghdad late last year.

Also attending the conference and a subsequent meeting with Iraqi officials in Baghdad were representatives of the Philippines' Communist guerrilla movement, authorities said.

The armed forces chief of staff, Lt. Gen. Rodolfo Biazon, said seven Arab members of two suspected Iraqi-sponsored terrorist groups are in the Philippines and are being hunted.

An Iraqi diplomat who arrived here Jan. 14, Sabah Saddiq Saad, is being denied accreditation on grounds that he was involved in Saturday's bombing and will have to leave the country, sources said.

Due to be deported Friday are two Iraqi students, identified by authorities as Hisham and Husham Abdul-Sattar, sons of the Iraqi ambassador to Somalia, who formerly served in Manila. The brothers, who have lived in the Philippines since 1982 and speak fluent Tagalog, were arrested when investigators raided their house and found belongings of the two Iraqis who prematurely detonated a powerful bomb Saturday. Among the items reportedly found were an address book containing the names of suspected associates of the bombers and residues of a compound used to make explosives.

Husham Abdul-Sattar, 26, a leader of the "National Union of Iraqi Students and Youth -- Philippine Branch," had been active in organizing anti-U.S. demonstrations lately and had traveled to North Korea, said Antonio Aragon, a deputy director of the National Bureau of Investigation.

In a statement this week, the Philippine National Police said foreign terrorists "have been very active in establishing contacts" with groups opposed to U.S. military bases here, notably the rebel Communist Party of the Philippines and its appendages, the New People's Army and the National Democratic Front.

The statement said Communist leaders had sought Iraqi support for their 22-year-old guerrilla war and that explosives captured in October from a rebel safehouse in Manila were believed to have come from Iraq. The National Democratic Front warned Jan. 11 that if war broke out in the gulf, its forces would "launch intense and all-out politico-military offensives" on U.S. military bases.

The statement accused the Aquino government of "cynically abetting U.S. direct intervention and naked aggression" against Iraq. It was signed by Luis Jalandoni, a former Jesuit priest who now runs the front's international operations in Utrecht, the Netherlands.

Jalandoni led a Philippine Communist delegation to Baghdad in December to meet with leaders of Saddam's Arab Baath Socialist Party. In a joint communique at the end of the four-day visit, the front recognized "Iraq's legal and inalienable claim to Kuwait" and vowed to support Iraq "in the face of any U.S. threat."

The communique also expressed the delegation's "appreciation" of Iraq's "solidarity" in battling "the continued presence of the U.S. military bases and troops in the Philippines." The reference fueled speculation of Iraqi material support for the Communist rebels, whose movement has been flagging lately.