The fourth day of Vice President Sara Duterte's impeachment trial focused on the prosecution's case against her, with National Bureau of Investigation (NBI) regional director Jeremy Lotoc testifying as a key witness.Prosecutors emphasized their strategy to build an 'airtight' case based on evidence rather than speculating on voting thresholds.Lotoc stated the NBI found intent, motive, and capability in Duterte's alleged threats against President Ferdinand Marcos Jr., First Lady Liza Araneta-Marcos, and former Speaker Martin Romualdez.The defense argued that NBI recommendations are not binding on the Department of Justice and stressed that only courts can determine guilt.The trial also addressed discrepancies in the timeline of events and the lack of validated information on the alleged hitman.

Senate President Sherwin Gatchalian ordered the presentation of NBI Director Melvin Matibag as a witness next week, while the defense opposed the prosecution's request to introduce surprise witnesses.The proceedings continue as both sides present evidence and challenge each other's claims.