From the Visayan Daily Star (Oct 2): Rebels burn 3 cargo trucks, tractor

A group of suspected New People’s Army rebels burned three cargo trucks and a tractor owned by a sugar planter in Hacienda San Andres, Brgy. Andres Bonifacio, Cadiz City Sunday, after harassing a military outpost in the area.... Police investigations showed that such incidents usually occur during the milling season, and are aimed to remind or punish sugar planters, who fail to pay revolutionary taxes demanded from them by the NPA.

http://www.visayandailystar.com/2012/October/02/topstory9.htm