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FORENSICS. National Bureau of Investigation Special Agent John Mark Calilung testifies during the second day of the impeachment trial of Sara Duterte on July 7, 2026.
Senate Social Media Unit
The testimony of NBI Agent John Mark Calilung offers a look at how investigators collect, preserve, and authenticate online evidence for use in court
MANILA, Philippines – On the second day of the impeachment trial of Vice President Sara Duterte on Tuesday, July 7, the House panel of prosecutors presented its first witness, Senior NBI Agent John Mark Calilung, for the first article of impeachment among 4 to be tackled: Sara’s alleged grave threats against President Ferdinand Marcos Jr., First Lady Liza Marcos, and former House speaker Martin Romualdez.
