MANILA - Health Secretary Francisco Duque on Monday said he has discovered more irregularities in his department and vowed that "heads will roll."

The procurement and implementation of the P8.1-billion Barangay Health Station (BHS) Project was among the projects believed to be anomalous, the department said in a statement.

The project envisioned to build some 5,700 barangay health stations to "ensure access of every barangay to primary care, using public elementary schools as identified sites," it added.

"I tried to give the persons involved the benefit of the doubt. I am beyond frustrated. I am saddened and disgusted that the Filipino people are being shortchanged by the very people who were supposed to serve them," Duque said.

"Heads will roll. Big names, small names, past and present. There will be no sacred cows. Heads will definitely roll," he added.

Duque initiated a task force in April to investigate the projects flagged by the Commission on Audit in its 2017 report. The DOH added that there were also reports of anomalies and officials of the department recommending payment without validation and financial document requirements.

Auditors said the project "was obstructed by ineligible and non-workable project sites that were not fully validated before project contracting and implementation due to absence of specific guidelines."

Procured equipment remain idle and undistributed to intended school-based health stations due to the delay and non-completion of the project, they added.

Duque ordered a "meticulous review" of all transactions entered into by the previous administrations, said the statement. The department also submitted documents to the Senate, House of Representatives, and the Presidential Anti-Corruption Commission for possible parallel investigations.