A NOTORIOUS drug pusher who is a half brother of a former mayor of Plaridel, Bulacan was killed together with his live-in partner, in an armed encounter with the joint operatives of Criminal Investigation and Detection Group Regional Office 3 (CIDGR3) and Bulacan CIDG during a buy bust operation in Barangay Santo Cristo, Pulilan, on Tuesday morning. Police Senior Supt. Edwin Quilates, CIDG3 regional officer identified the slain suspect as Roy Ramos alias Taroy, and his live-in partner Rica Rose Estrada, 26, both of Sitio Dike, Barangay Banga 2nd in Plaridel town. The suspect and Estrada were shot dead while on board their black Mitsubishi Lancer with no license plate during a buy-bust at about 4:20 a.m. Police said the suspect open fired at the poseur buyer after noticing that he was transacting with a policeman, prompting the operatives to fire back killing the two. It was learned that the suspect was a half brother of former Plaridel Mayor Tessie Vistan. He has been arrested and jailed through the help of Vistan during her term. Recovered from the crime scene were a caliber .40 firearm and four sachets of shabu.