Opposition Congress and the BJP in Kerala on Tuesday accused the Left front government of hatching a conspiracy to destroy the evidence related to the gold smuggling case after a fire broke out at the general administration department of the secretariat. Claiming that the fire was not an accident, the state Congress and the BJP staged a protest outside the Kerala Secretariat in Thiruvananthapuram. According to reports, the fire started at the Protocol office that is under the NIA scanner in the gold smuggling case. The fire was brought under control after firefighters were rushed to the spot and no casualties were reported. However, some files, documents and computers were burned in the blaze.