ZAMBOANGA CITY: A marine sentinel was allegedly shot dead by a drunken soldier on Christmas Day in Basilan province, an official of the Philippine Marines said. The victim, Sergeant Errol Chavez, was killed on the spot after being peppered with bullets from an automatic rifle by Private First Class Dave Bryan Abang inside the command post of the 111st Marine Company in Calang Canas, Maluso town. The 23-year-old Abang was immediately arrested by other soldiers and placed under military investigation. The municipal police had been informed of the incident and are also conducting its own probe to the killing of Chavez, 31. Early this month, policeman Mario Tobias killed PO2 Alano Abdulwahid inside their base in Bongao town in Tawi-Tawi. Tobias, who ran amuck for still unknown reasons, fired his M16 automatic rifle and killed the cop. Two other policemen, identified only as SPO3 Kamaluddin and PO1 Tety, were also wounded in the rampage.