Former Senate President Franklin Drilon and Vice President Sara Duterte —INQUIRER file photos

MANILA, Philippines — Former Senate President Franklin Drilon warned that attempts to conceal evidence in the upcoming impeachment trial of Vice President Sara Duterte could lead to public backlash and create political instability in the country.

In a statement on Friday, Drilon said the “greatest risk” facing the country today is the possible failure of the impeachment process against the vice president, recalling the events that ended the impeachment trial of former President Joseph Estrada.

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