llegal.The money raised dwarfs the amounts regularly extorted from mining, logging and other businesses based in the rural areas where the 4,000-member guerrilla force operates, he added.This is when really the NPAs make a killing out of their extortion, he added.The NPA ambushed Ruth Guingona, the 78-year-old mayor of Gingoog city on the southern island of Mindanao on Saturday, killing two of h