Title
Alih vs. Gastro
Case
G.R. No. L-69401
Decision Date
Jun 23, 1987
Military raid on Zamboanga compound led to illegal search, seizure, and arrests; Supreme Court ruled warrantless search unconstitutional, evidence inadmissible, upheld physical tests.

Case Summary (G.R. No. L-69401)

Facts of the Raid

On November 25, 1984, over two hundred Philippine Marines and home defense forces conducted a “zona” operation—an unannounced military sweep—targeting suspected loose firearms and explosives in the petitioners’ compound. The occupants responded with warning gunfire; a firefight ensued, causing multiple casualties. The following morning, the compound surrendered. Sixteen male occupants were arrested and subjected to fingerprinting, paraffin testing, and photography against their objections. Military personnel inventoried and confiscated nine M16 rifles, one M14 rifle, nine rifle grenades, and assorted ammunition.

Procedural History

Petitioners filed a petition for prohibition and mandamus with preliminary injunction on December 21, 1984, seeking the return of seized articles, exclusion of the evidence, and relief against compelled physical examinations. The Supreme Court treated the petition as an injunctive suit and referred it to the Regional Trial Court of Zamboanga City, which received evidence and submitted recommendations.

Applicable Law

1973 Philippine Constitution, Article IV, Section 3: Protection against unreasonable searches and seizures; requirement of probable cause and a warrant.
1973 Constitution, Article IV, Section 4(2): Exclusionary rule—evidence obtained in violation of the preceding section is inadmissible.

Petitioners’ Claims

  1. The warrantless search and seizure violated their constitutional protection against unreasonable searches and seizures.
  2. Articles seized should be returned and barred from use as evidence.
  3. Fingerprinting, photographing, and paraffin testing constituted self-incrimination prohibited by the Constitution.

Respondents’ Justifications

Respondents acknowledged the absence of a search warrant but invoked the defense of superior orders. They also cited the heightened peace and order situation following the assassination of Mayor Cesar Climaco.

Court’s Analysis on Warrantless Search

The Constitution’s guarantees cannot be suspended by superior orders or exigent circumstances short of actual hostilities. No declaration of martial law or emergent warfare existed in Zamboanga City to justify bypassing civil courts. Respondents could have secured a search warrant from any of the ten functioning trial courts in the city or surrounded the premises pending judicial authorization. Their unilateral determination of probable cause and forcible entry violated the supremacy of civilian judicial authority and the ancient principle that a person’s home is inviolable without lawful process.

Exclusionary Rule and Fruits of the Poisonous Tree

Because the search was unconstitutional, all firearms and ammunition seized are inadmissible in any proceeding against the petitioners. These items are “fruits of the poisonous tree,” and their exclusion is necessary to deter future violations by prosecution-controlled law-enforcement officers. The seized articles shall remain in custodia legis pending proper disposition by the courts confronting the criminal cases a

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