What causes Cotabato City's blackout Friday night?

COTABATO CITY - A burned and toppledpost in Sultan Kudarat town in Maguindanao triggered more than 2 hour power interruption in the whole franchise area of Cotabato Light and Power Company Friday evening and Saturday morning.Anna Lea Natanio, speaking for Cotabato Light, said the NGCP 69kV line from Simuay sub-station to Cotabato City tripped off at 10:57 Friday.Power was fully restored at 1:40 a.m. Saturday, she said.Residents here feared of another long hours of power outages similar to what had happned on December 10 last year when the whole franchise area of Cotabato Light suffered 15-hour long power outage. The root cause of NGCP 69KV interruption last night was due to burned and toppled structure No. 762-B located at Salimbao, Sultan Kudarat, Maguindanao, the Cotabato Light statement said.It said NGCP crew are undergoing repair works.It did not say whether the structure was intentionally or accidentally burned.