The defense team of Vice President Sara Duterte focused on cross-examining National Bureau of Investigation Director Melvin Matibag during her impeachment trial, emphasizing his lack of personal knowledge regarding the NBI's probe into her alleged grave threats.

Matibag admitted he had no personal knowledge of the first investigation, which was conducted under a different NBI head, and that his testimony was based solely on existing NBI records.The defense argued that Matibag's testimony about the first investigation constituted hearsay, as he was not involved in that probe.

They also tested his credibility and potential bias, citing his wife's support for the impeachment and a viral incident involving his friend Mel Sabio.

The prosecution attempted to have Matibag read portions of an affidavit by Arturo Lascañas, which implicated Sara Duterte, but the defense objected, claiming it violated the accused's rights.The impeachment court allowed the cross-examination to continue, highlighting the ongoing legal battle over the evidence presented.