About 12 armed Maoists set fire to three trucks at around 1 am in Giridih's Isri area and cut down trees to block traffic on the Dumri-Giridih road, Giridih Superintendent of police Ravi Kant Dhan said.
Three trains jumped off the tracks and another derailment was averted on Thursday in Uttar Pradesh, New Delhi and Maharashtra within a span of nine hours.
