G.R. No. L-28812 - People vs. Luna

On November 7, 2005, an Information was filed charging Belen Mariacos with violating Article II, Section 5 of R.A. No. 9165 for transporting 7,030.3 grams of dried marijuana fruiting tops on October 27, 2005 in San Gabriel, La Union, without a permit.
At arraignment on December 13, 2005, the accused pleaded not guilty.
During pre‐trial, the parties stipulated to:

On the evening of October 26, 2005, police set up a checkpoint in San Gabriel but found no suspects; they then surveilled Barangay Balbalayang.
At dawn on October 27, a Barangay Intelligence Network agent tipped PO2 Pallayoc that three bags and one blue plastic bag containing marijuana were loaded atop a jeepney, including a backpack marked “O.K.”
PO2 Pallayoc boarded the moving jeepney, located the “O.K.” backpack, and peeked inside, seeing bricks of marijuana in plain view.
Upon arrival at the poblacion, two women were carrying the bags; PO2 Pallayoc identified himself and arrested one, later identified as Mariacos, then brought her and the bags to the police station.
In the presence of the Mayor, the bags were opened: recovery of three bricks of marijuana, two round bundles, and two bricks of marijuana fruiting tops; items were inventoried, marked, and forwarded to the Crime Lab, which tested positive for marijuana.

Mariacos testified that neighbor Bennie Lao-ang asked her and a companion, Lani Herbacio, to carry unidentified bags atop the jeepney from the terminal to the poblacion for him.
After disembarkation, Lao-ang fled; she and Herbacio were then accosted by PO2 Pallayoc, who arrested them.
At the station, Herbacio escaped; Mariacos discovered the contents of the bags and executed a counter-affidavit asserting lack of knowledge and ownership.

On January 31, 2007, RTC Branch 29, San Fernando City convicted Mariacos of unlawful transport of dangerous drugs, sentencing her to life imprisonment, a ₱500,000 fine, and ordering confiscation of the 7,030.3 grams for destruction.
On January 19, 2009, the Court of Appeals in CA-G.R. CR-HC No. 02718 affirmed in toto, holding the warrantless search valid under the moving vehicle exception, the arrest lawful, and the chain of custody adequate.

Was the warrantless search and seizure of the bags on a moving jeepney lawful?
Did PO2 Pallayoc have probable cause to conduct the search and to arrest appellant without a warrant?
Did the prosecution comply with the chain of custody and inventory requirements under R.A. No. 9165 and its IRR, and does any non‐compliance render the evidence inadmissible?
Did the prosecution prove the corpus delicti of unlawful transport of dangerous drugs, including any required element of ownership or knowledge?