G.R. Nos. 141675-96 November 25, 2005
Jesus T. Tanchanco and Romeo R. Lacson, Petitioners, vs. The Honorable Sandiganbayan (Second Division), Respondent.

FACTS

Petitioner Jesus Tanchanco, former NFA Administrator, entered into a Cooperation Agreement with the PCGG on May 6, 1988. In exchange for his complete and truthful cooperation in government investigations and the recovery of ill-gotten wealth, the PCGG agreed to: (1) move to dismiss all pending actions against him before the Sandiganbayan; (2) lift any sequestration orders on his properties; and (3) not bring any additional civil or criminal charges against him arising from his service in the Marcos government or from actions revealed through his cooperation. Tanchanco complied, testifying as a prosecution witness in the RICO case against Imelda Marcos in New York.
Despite this agreement, the government, through the Office of the Ombudsman, filed 22 criminal informations against Tanchanco and his co-petitioner Romeo Lacson before the Sandiganbayan in 1997. The petitioners moved to quash/dismiss the cases, invoking the immunity granted under the Cooperation Agreement. The Sandiganbayan (Second Division) denied the motion, ruling that the PCGG had no authority to bind the Ombudsman and that the agreement covered only cases pending at the time of its execution, not future charges.

ISSUE

Whether the Sandiganbayan committed grave abuse of discretion in denying the motion to quash/dismiss the criminal cases based on the immunity clause in the Cooperation Agreement between Tanchanco and the PCGG.

RULING

Yes. The Supreme Court granted the petition and ordered the dismissal of the criminal cases. The Court held that the Sandiganbayan committed grave abuse of discretion in refusing to honor the valid and binding immunity agreement. The legal logic is anchored on the principles of contract law and state obligation. The Cooperation Agreement constitutes a valid contract between Tanchanco and the Republic, through the PCGG. The state, having entered into this covenant in pursuit of a legitimate governmental objective (recovering ill-gotten wealth), is estopped from reneging on its promise after Tanchanco had fully performed his obligation by cooperating and testifying.
The Court rejected the Sandiganbayan’s narrow interpretation that the immunity applied only to cases pending in 1988. The agreement’s clear terms—that the state “shall not bring any additional civil or criminal charges”—encompass charges filed subsequently, provided they arise from the covered subject matter (service in the Marcos government). To rule otherwise would render the contract illusory and sanction governmental bad faith. The PCGG, acting within its mandate under Executive Order No. 14, had the authority to enter into such agreements to secure vital information for recovery efforts. The state cannot now repudiate its solemn commitment after having benefited from Tanchanco’s cooperation. The dismissal of the cases is compelled by the fundamental rule that the government must honor its contractual obligations, especially when an individual has performed his part to the state’s advantage.