Title
People vs. Yanson
Case
G.R. No. 238453
Decision Date
Jul 31, 2019
Three individuals arrested for transporting marijuana after a warrantless search based on a tip; Supreme Court acquitted one, ruling the search unconstitutional and evidence inadmissible due to lack of probable cause and improper chain of custody.
A

Case Digest (G.R. No. 238453)

Facts:

  • Tip and checkpoint operation
    • On May 31, 1996 at about 8:30 a.m., the M’lang Municipal Police Station received a radio message reporting a silver-gray Isuzu pickup (Plate No. SDC 619) carrying three persons and transporting marijuana from Pikit.
    • A police checkpoint was set up on the national highway between Matalam and M’lang. At around 9:30 a.m., officers stopped the pickup, asked the driver to open the hood, and found two sacks containing dried marijuana leaves.
  • Seizure, examination, and identification
    • The vehicle, driver (Jaime Sison), and two passengers (Rosalie Bautista and Leonardo Yanson) were brought to the M’lang police station; the seized sacks remained in custody.
    • The following day, the sacks were delivered to the Davao City Crime Laboratory. Superintendent Mallorca tested and reported a total weight of 5,637 grams of marijuana.
  • Trial court proceedings
    • An Information for violation of Section 4, Republic Act No. 6425 (Dangerous Drugs Act of 1972) was filed before RTC Branch 16, Kabacan, Cotabato. All three accused pleaded not guilty.
    • The prosecution presented six police witnesses; the defense presented the three accused as witnesses.
    • On March 11, 2013, the RTC convicted all accused, sentencing each to life imprisonment and a ₱20,000 fine; it ordered the vehicle’s return to its owner.
  • Appellate history
    • The Court of Appeals, in its January 23, 2018 Decision, affirmed the RTC judgment with modification—imposing reclusion perpetua instead of life imprisonment.
    • Leonardo Yanson alone appealed to the Supreme Court, raising issues on search validity, chain of custody under RA 9165, and conspiracy.

Issues:

  • Whether the warrantless search and seizure of the pickup was valid.
  • Whether Section 21 of RA 9165 (chain of custody) applies retroactively.
  • Whether accused-appellant Leonardo Yanson conspired with co-accused in transporting marijuana.

Ruling:

  • (Subscriber-Only)

Ratio:

  • (Subscriber-Only)

Doctrine:

  • (Subscriber-Only)

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