The House of Representatives prosecution panel on July 21, 2026 urges the public to hear the testimony of National Bureau of Investigation (NBI) Director Melvin Matibag, who will shed light on the agency's investigation into the alleged threats of Vice President Sara Duterte against President Ferdinand Marcos Jr. Lawyer Benjamin Tolosa Jr., prosecution spokesman and private prosecutor, said Matibag’s testimony would not only corroborate those of NBI Special Agent John Mark Calilung and Regional Director Jeremy Lotoc but would also