Palakkad, Dec 22 (ANI): Suspected Maoists attacked the office of forest department in Palakkad district of Kerala on Monday. The rebels vandalized the office and burnt an official vehicle. However, district collector K Ramachandran says it is yet to be established if Maoists are behind the incident. Meanwhile, Kerala police's wing for anti-Maoist operations called 'Thunderbolt' cordoned off the area and began combing operations in the nearby areas.