Initially facing reclusion perpetua (life imprisonment) for plunder, Estrada was granted pardon by then-president Gloria Macapagal Arroyo in 2007, the same year when he was convicted and detained.
His pardon was met with controversy, with some suspecting that Arroyo was trying to curry favor from the opposition.
How does a president grant pardon to prisoners? Here's a look into the system of presidential pardons in the country.
Nigel Tan is a Rappler intern.
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