Title
People vs. Concepcion
Case
G.R. No. L-1553
Decision Date
Oct 25, 1949
Francisco Concepcion convicted of treason for aiding Japanese soldiers in apprehending suspected guerrillas during WWII; appeals denied due to insufficient evidence of duress and unreliable new evidence.

Case Summary (G.R. No. L-1553)

Petitioner

The People of the Philippines

Respondent

Francisco Concepcion

Key Dates

• Apprehensions alleged: January 9, December 3, and December 7, 1944
• Decision date: October 25, 1949

Applicable Law

• 1935 Philippine Constitution (in force at time of decision)
• Revised Penal Code, Article 114 (treason)
• Two-witness rule (evidence law)

Conviction and Sentence

Concepcion was convicted on three counts of treason, sentenced to life imprisonment, fined ₱10,000, and ordered to pay costs.

Admission of Citizenship Evidence

After both sides rested, the trial court permitted the prosecution to reopen its case to prove Concepcion’s Filipino citizenship. The Supreme Court held that allowing additional evidence post-rest is within the trial court’s discretion and did not constitute reversible error.

Application of the Two-Witness Rule

Concepcion challenged the sufficiency of testimony under the two-witness rule, pointing to minor inconsistencies between pairs of witnesses regarding incidental details. The Court ruled that uniform testimony establishing the overt act of arrest—essential to each count—satisfied the rule despite nonessential divergences.

Aiding Arrest in Count Six

For the January 9, 1944 arrest of Gavino Moras, defense witnesses claimed Concepcion merely waited below the house. The Court found credible testimony from at least two witnesses that Concepcion and his Japanese companions arrived simultaneously, demonstrating his active assistance in the apprehension.

Duress Defense Rejected

Concepcion asserted he acted under duress as a liaison officer forced by the Japanese. The record contained no evidence of actual or imminent threats of death or bodily harm; the Court concluded he willingly participated in treasonous acts.

Motion for New Trial and Newly Discovered Evidence

Concepcion’s motion, based

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