About 19 armed Maoists raided the site of the private construction company and assaulted the employees before setting ablaze a road roller, a generator set, a welding machine and four motorcycles, Deputy Superintendent of Police , Headquarters, Ravindra Kumar said.
The ultras left behind pamphlets on the spot before escaping, he said, adding that raids were being carried out to nab them.
The non-payment of levy by the construction company could be the motive behind the incident, the DSP said.