NEGROS OCCIDENTAL, Philippines – Police in Negros Island Region (NIR) are still facing a blank wall on the motive and suspects behind the controversial murder of Negrense radio blocktimer in La Castellana town on Friday, March 20. The Police Provincial Office (PRO) in the NIR has its Special Investigation Task Group (SITG) now leading the probe into the killing of Julito “Jaz” Calo. Calo was a blocktimer for “Waswasay sa Quinto Distrito” (Beatin…