Two unidentified assailants shot Endrinal, a commentator on radio station DZRC in Legazpi City, Albay Province, while he was leaving his house for the radio station at 6:20 a.m. The local police chief, Jaime Lazar, told journalists that the assailants shot Endrinal in the foot and then continued shooting him in the head and body as he fell.
Endrinal hosted a political commentary show on DZRC in which he spoke out against local politicians and criminal gangs, said the Manila-based Center for Media Freedom and Responsibility (CMFR), a local press freedom organization. He also published the regional newspaper Bicol Metro News. Endrinal's wife and colleagues said he had recently received death threats.
In 2010, a judge in Manila acquitted two suspects, one of them a senior police official, in connection with the killing.