MANILA, Philippines — The late Department of Public Works and Highways (DPWH) undersecretary Maria Catalina “Cathy” Cabral tested positive for an antidepressant drug based on laboratory results, while authorities moved to subject her electronic devices and office files to digital forensic examination as investigations into her death continued. The Philippine National Police (PNP) said laboratory tests showed Cabral had traces of an antidepressant drug in her system. Investigators recovered medication and a knife from her hotel room in Baguio City, items that police said were secured for examination to determine whether the drugs had been used. CCTV footage obtained by investigators showed Cabral arriving at the Ayon Hotel in Baguio City on the day of her death, entering the premises ahead of her sport utility vehicle driven by her driver. The footage showed them checking in, after which Cabral was escorted to her suite on the fourth floor. Later videos showed brief interactions between Cabral and her driver before both were seen leaving the hotel. Minutes later, the SUV departed and was believed to have headed toward Kennon Road shortly before 3 p.m. Authorities said additional CCTV footage was not released as it formed part of the ongoing investigations by the PNP and the National Bureau of Investigation (NBI). Interior Secretary Jonvic Remulla said the postmortem examination revealed extensive injuries on the right side of Cabral’s face, the back of her skull, her rib cage, and her hands, findings that he said were consistent with a fall. Based on the evidence gathered so far, Remulla said investigators could already set aside foul play as a primary angle. Despite this, police said further examination of Cabral’s cellphone remained necessary to determine whether she had received threats, who she had communicated with in the days leading up to her death, and whether she had pending transactions. The PNP has applied for a search warrant to gain access to the device. Authorities also cleared Cabral’s driver of involvement, saying there were no conclusive links connecting him to her fall. Biometric examinations, including fingerprint and facial feature analysis, confirmed that the body recovered from a ravine along Kennon Road was Cabral’s. Meanwhile, the DPWH has turned over Cabral’s computers and office files to the Office of the Ombudsman. The department said the materials were taken from Cabral’s former office and include documents related to officials’ requests during the preparation of the National Expenditure Program over the past decade. Cabral, a former DPWH undersecretary, had been linked by investigators to infrastructure-related anomalies, including an allegedly overpriced rock netting project near the area where her body was found. Investigations into her death and the documents she left behind are ongoing.