Judge Leili Cruz-Suarez said in her ruling yesterday that Jul Kifli from Indonesia and Abu Sayyaf militants Ahmad Jekeron and Yacob Basug were "guilty beyond reasonable doubt" of staging the April 21, 2002, bombing that also wounded dozens of people at the Fitmart shopping mall in the southern port city of General Santos.
State prosecutor Aristotle Reyes, who initially handled the case, said the convictions would serve as a deterrent to terrorism and complement military actions to defeat the resilient militants.
He said the Abu Sayyaf was looking for a diversion to fend off a military offensive at the time, and Jemaah Islamiyah "wanted to show off their bomb-making prowess."
With the help of Filipino militants, including notorious bombing suspect Basit Usman, Jul Kifli manufactured the powerful bomb and placed it near the entrance of the mall. The bomb was remotely detonated with a cellphone call made by Jekeron, Hamdie said.
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"He uttered a short prayer then dialed the cellphone number given by Jul Kifli," he said.
Indonesian Ibrahim Ali and Abu Sayyaf militants Arman Ameruddin and Ikram Ameruddin were acquitted in the trial.
The Abu Sayyaf was founded in 1991 in the south, homeland of minority Muslims in the largely Roman Catholic country and scene of rebellions for a separate Muslim homeland.
Washington considers the Abu Sayyaf, which currently has about 400 armed fighters split into about six factions, as a terrorist group.
A US-backed offensive has weakened and largely isolated the Abu Sayyaf, but it has endured by turning to ransom kidnappings and extortion. It currently holds about a dozen hostages.