Quezon city: The preliminary investigation into the plunder complaints filed against Senator Jinggoy Estrada and former senator Bong Revilla, in relation to alleged irregularities in flood control projects, is set to begin soon, as announced by the Department of Justice (DOJ) on Saturday.

According to Philippines News Agency, Prosecutor General Richard Fadullon, speaking at a news forum in Quezon City, indicated that subpoenas for Estrada and Revilla will be issued by 'next week.' Fadullon stated, "I believe by next week, this coming week, we will be issuing the subpoenas already in connection with those cases. Meaning to say, magsisimula na ang preliminary investigation sa kanila (the preliminary investigation will commence)."

The complaints, filed by the National Bureau of Investigation, pertain to irregularities within flood control projects in Bulacan province and other transactions. The charges against Revilla, Estrada, and resigned Ako Bicol party-list representative Zaldy Co include violations of the Anti-Graft and Corrupt Practices Act, as well as the Code of Conduct and Ethical Standards for Public Officials and Employees.

Revilla's involvement in the scandal was highlighted by former Department of Public Works and Highways (DPWH) undersecretary Roberto Bernardo, who alleged that PHP125 million was delivered to the former senator's residence in 2024 and an additional PHP250 million through his aide ahead of the 2025 elections. Bernardo also accused Estrada of requesting PHP500 million from former DPWH secretary Manuel Bonoan, which included an 18 percent commitment in the budget, with intentions to complete PHP1 billion in projects. Furthermore, Bernardo claimed that a 25-percent commitment amounting to PHP213 million was delivered to Estrada at the Artiaga Building in San Juan City in 2025, and that Estrada personally confirmed receipt.

Both Revilla and Estrada have denied the allegations of receiving kickbacks from the flood control projects.