PDEA Cagayan Valley head Primitivo Bayungan said operatives intercepted the contraband on a passenger bus at Sitio Tubong in Naganacan, Santa Maria at about 2pm on Thursday, after surveillance work with the Isabela police on suspected traffickers in the region.[1] Four cigarette boxes in the bus cargo hold concealed the dried marijuana bricks, consigned to one Arnel Viernes of Cubao, Quezon City; Bayungan said the marijuana had likely come from Kalinga and was bound for Metro Manila.[1] The joint team of PDEA, Isabela police, criminal investigators and police intelligence could not identify the shippers.[1]