The Philippine authorities appear to have some leads and are reported to have already made six arrests.
In light of the hostage incident, considerable public anger was vented against the Philippine authorities.
The plan was approved by the Philippine authorities in 1941.
Philippine authorities have found yachts, paintings and a few hundred million dollars.
Philippine authorities will not accept any substitute document issued in the United States.
No evidence has been presented at the trial that the threat was sent to the Philippine authorities.
Philippine authorities broke up the plot before the bombers could carry out their plans.
Philippine authorities are investigating if the money is part of the 5 billion dollars with which Marcos fled from the country in the 1980s.
Given the value of this work, it is inexplicable that he should have been treated so aggressively by the Philippine authorities.
The Philippine authorities said the brothers, born in Missouri, had been under surveillance before their arrest.