According to the FBI, Urbina has used alias names in the past including Lorenzo Maes, Fernando Ramos and Fidel Urbina Aguirre.

CNN: STORY HIGHLIGHTS

Supporters of her successor, Fidel Ramos, had also wanted to tinker with the constitution but ran into fierce resistance.

ECONOMIST: The Philippines

Among Mr Estrada's critics is his predecessor as president, Fidel Ramos, who also stood up against Marcos when it mattered.

ECONOMIST: People power rides again