This study investigated the implementation and impact of intelligence report writing among selected Philippine National Police (PNP) personnel, particularly in Police Regional Office 8 (PRO8), to propose an intervention program and enhance reporting practices. Intelligence reports are critical in ensuring timely, accurate, and ethical information for operational decision-making. However, challenges such as inaccuracies, malicious reporting, and security breaches compromise the integrity of intelligence outputs. Using a Sequential Explanatory Mixed Methods Design, the study quantitatively assessed the implementation level of the guiding principles—accuracy, clarity, completeness, and timeliness—among PNP personnel and confidential unit members, followed by qualitative data gathered from high-ranking officials to understand the impact and verification processes of intelligence reporting. The study revealed that the guiding principles of intelligence writing—accuracy, clarity, completeness, and timeliness—are generally very much implemented across respondents, with high-ranking officials and Confidential Unit members showing strong adherence to professional standards. This indicates a high level of competence and organizational discipline in intelligence documentation. However, PNP personnel rated the implementation as moderate, suggesting areas for improvement in data verification, clarity of communication, and timeliness of report submission. The findings also showed that inaccuracies, security breaches, and malicious reporting have a very much effective impact on the overall efficiency of security operations. These issues can lead to poor decision-making, coordination problems, and loss of credibility. The study concludes that maintaining information accuracy, confidentiality, and authenticity is crucial for operational success and public trust. It recommends continuous training, strict supervision, improved verification mechanisms, and stronger security protocols to enhance the reliability and effectiveness of intelligence operations.