Interior and Local Government Secretary Jonvic Remulla and Senate President Alan Peter Cayetano engaged in a heated exchange on Monday, June 1, after operatives of the Philippine National Police Criminal Investigation and Detection Group (PNP-CIDG) arrived at the Senate to implement the Sandiganbayan arrest warrant against Senator Jinggoy Estrada.

Videos shared online showed the two officials in a tense confrontation inside the Senate chamber as PNP-CIDG personnel read Estrada his Miranda rights.

Cayetano argued that Estrada should have been allowed to leave the Senate premises first before being arrested outside, invoking precedents from past administrations where senators facing arrest were given the courtesy of walking out of the building on their own before being taken into custody.

Remulla, however, held firm and pushed through with the arrest. He later told reporters that he reminded Cayetano that the Senate had forfeited the privilege of extending such accommodations, citing the May incident in which Senator Ronald "Bato" Dela Rosa was able to leave the Senate grounds despite an attempted arrest by the National Bureau of Investigation, allegedly with the help of a fellow senator.

Remulla also maintained that the executive branch has the authority to arrest members of the legislative branch, notwithstanding the constitutional principle of separation of powers.

Estrada was subsequently brought to Camp Crame for processing after being read his Miranda rights inside the Senate.

The confrontation between Remulla and Cayetano marks the latest flashpoint in the ongoing tension between the executive and legislative branches, following a series of high-profile incidents at the Senate in recent weeks, including the May 13 Senate shooting and lockdown and the attempted arrest of Dela Rosa, which drew widespread criticism and renewed questions over the boundaries of Senate privilege and institutional immunity.

Estrada had earlier stated he would not seek Senate custody and would face the plunder charges against him in court. The Sandiganbayan Fifth Division issued the warrant in connection with alleged irregularities in flood control projects.