So, without even an order coming from the President, the NBI is mandated to investigate this matter,” Castro said. The National Bureau of Investigation is mandated to investigate the spreading on social media of what Malacañang calls a fake medical document on the health of President Ferdinand Marcos, Jr., Palace Press Officer Usec. Castro said the NBI should investigate the incident, noting that spreading false information on the President's health should not be taken lightly. So, without even an order coming from the President, the NBI is mandated to investigate this matter,” she said. "Nakita po natin kung gaano kasipag ang Pangulo.