G.R. No. 142848 - Yu vs. Presiding Judge, Regional Trial Court of Tagaytay City, Branch 18

On November 14, 1994, Atty. Eugene Tan, former President of the Integrated Bar of the Philippines, and his driver Eduardo Constantino were abducted in Alabang, Muntinlupa.
The victims were taken to Cavite where both were shot to death, and their bodies were later exhumed on November 17, 1994 from Barangay Malinta, Sampaloc 2, Dasmariñas, Cavite.
The Presidential Anti-Crime Commission (PACC) conducted the investigation and subsequently filed charges before the Department of Justice (DOJ) under docketed I.S. No. 94-557.

The initial complaint included several accused individuals, including private respondents—notably Rodolfo Ochoa and Reynaldo de los Santos—and even petitioner Eugene Yu and his wife, Patricia Lim-Yu.
Although charges against petitioner and his wife were dropped for lack of evidence, later developments led to the filing of a separate information before the Regional Trial Court (RTC), Branch 18 of Tagaytay City.
After the filing of the information, sworn statements were executed by private respondents implicating petitioner in the abduction and killing.

During the preliminary investigation, petitioner filed a motion to dismiss the charges, arguing that the sworn statements were inadmissible and that there was insufficient evidence to establish probable cause.
The DOJ’s investigating panel, however, denied petitioner’s motion on January 30, 1995.
Following this, three separate informations were filed against petitioner, prompting him to file an omnibus motion to determine probable cause, deny the issuance of a warrant of arrest, and quash the information.

On December 8, 1995, the RTC issued a resolution finding probable cause against petitioner as an accomplice, directing that a warrant of arrest be issued and setting bail at ₱60,000.00.
Both the prosecution and petitioner filed motions for reconsideration regarding the RTC resolution; these were denied in a subsequent order dated February 6, 1996.
The prosecution then filed a petition to discharge and exclude private respondents (Ochoa and de los Santos) from the information so that they could be utilized as state witnesses under the Witness Protection and Security Benefit Program (WPSBP) provided by Republic Act No. 6981.
On March 6, 1997, the RTC granted the petition to discharge these accused as state witnesses, effectively removing them from the criminal proceedings.

Dissatisfied with the RTC decision, petitioner filed a Petition for Certiorari and Prohibition before the Court of Appeals.
On September 30, 1999, the Court of Appeals dismissed petitioner’s petition for lack of merit, holding that determining who should be prosecuted is primarily an executive function.
Petitioner’s subsequent Motion for Reconsideration before the Court of Appeals was also denied in a resolution dated April 4, 2000.
The Supreme Court eventually became involved, and issues were raised as to whether the discharge of an accused to be used as a state witness was a judicial function and if the RTC had abused its discretion.

Whether or not the Court of Appeals erred in holding that the discharge of an accused is not a judicial function, but rather an exercise of prosecutorial discretion.

This issue questions whether the decision to discharge an accused for state witness purposes falls within the exclusive prerogatives of the executive branch rather than the judiciary.
It explores the extent of judicial review over prosecutorial decisions in the context of witness protection and criminal proceedings.

Whether or not the Court of Appeals erred in failing to consider the claim that the RTC gravely abused its discretion when it discharged the accused as state witnesses.

Petitioner argued that the requirements under Rule 119, Section 17 of the Revised Rules on Criminal Procedure were not met because the prosecution failed to present necessary evidence (such as the sworn statements and memorandum of agreement) prior to the discharge.
The issue also concerns whether the discharge under Republic Act No. 6981, which operates independently from the judicial discharge mechanism, can be scrutinized for abuse of discretion.