The former lawmaker, best known for being feisty and fearless, died at the St. Luke's Medical Center at the Bonifacio Global City in Taguig after battling stage 4 lung cancer.
Her official twitter account posted a message that former Sen. Santiago dead peacefully in her sleep this morning.
Senator Miriam Defensor Santiago died peacefully today at 8:52 a.m. Details of the interment will be announced later. (1/2)— Miriam Santiago (@senmiriam) September 29, 2016