The National Bureau of Investigation (NBI) has secured a crucial lead in its ongoing probe into alleged death threats made by Vice President Sara Duterte against President Ferdinand Marcos Jr., First Lady Liza Araneta-Marcos , and House Speaker Martin Romualdez , according to sources familiar with the inquiry.

The development comes as the House of Representatives formally ordered the NBI to release all records of its investigation. The House Committee on Justice issued the directive this week, citing the need for transparency in a case with serious national security implications.

For Philippine readers, this probe strikes at the heart of political stability. Threats against the country's highest elected officials—including the President and the First Lady—are not just personal attacks but an outright threat to the democracy, according to a statement from the House of Representatives .

Vice President Sara Duterte has repeatedly skipped NBI hearings, including a recently scheduled appearance. Her absence has fueled speculations about the nature of the threats, which were allegedly made in private conversations but have since been leaked to authorities.

The NBI lead reportedly involves electronic evidence and witness testimony linking the Vice President to the threats. Investigators are now verifying the authenticity of the materials, a source told Rappler . Read more about Philippine politics .

House Speaker Martin Romualdez earlier described the threats as "an outright threat to our democracy," echoing sentiments from the Palace. The NBI probe was initiated after a formal complaint was lodged by the Philippine National Police (PNP).

The case highlights the deepening rift between the Marcos administration and the Duterte camp. Political analysts have noted that such threats, if proven, could trigger impeachment proceedings or even criminal charges against the Vice President.

First Lady Liza Marcos has not publicly commented on the probe, but Palace sources confirm she is fully cooperating with authorities. The NBI is expected to release its findings within the next few weeks.

The House Committee on Justice has given the NBI until the end of the month to submit all records. Failure to comply could result in a contempt order, lawmakers warned. For more updates on this case, check out local news .

Legal experts say that under Philippine law, a threat against the President is considered a crime against public order , carrying a penalty of up to 12 years in prison. The charge could be elevated if the threat is deemed credible and imminent.

The NBI's lead originated from a digital forensics analysis of messages exchanged between the Vice President's office and an unnamed third party. The messages allegedly contained explicit language about harming the First Family and the Speaker.

Opposition figures have called for a fair investigation, urging the NBI to avoid politicizing the case. "Due process must be followed," said a statement from the Minority Bloc in the House.

Meanwhile, supporters of Vice President Duterte have questioned the timing of the probe, suggesting it is a distraction from pressing economic issues. They have also pointed out that the Vice President has not been formally charged and remains entitled to the presumption of innocence .

The NBI has not publicly disclosed the exact nature of the lead, citing operational security. However, a spokesperson confirmed that the investigation is "nearing completion" and that a report will be submitted to the Department of Justice (DOJ).

President Marcos has remained silent on the matter, but his official social media accounts have been posting about national security and unity. The First Lady, known for her low profile, has stayed out of the spotlight.

The battle between the two most powerful political families in the Philippines—the Marcoses and the Dutertes —has captivated the nation. Once allies, they are now at odds over issues ranging from charter change to foreign policy.

Political analysts believe this case could define the remainder of President Marcos's term. If the Vice President is found guilty, it could lead to a power vacuum or a realignment of political forces ahead of the 2028 elections.

For the average Filipino, the implications are stark: threats against a sitting president undermine the foundations of democratic governance. The outcome of this NBI probe will likely shape public trust in the country's justice system.

The House of Representatives has vowed to pursue the case despite the Vice President's absence. "No one is above the law," said a committee member in a recent briefing.

This is a developing story. Updates will be posted as they become available. Stay informed with the latest from Philippine politics .

The significance for Filipino readers cannot be understated: a stable government requires that all officials, regardless of rank, submit to the rule of law. This case tests whether the Philippines can hold its highest officials accountable.