​Kothagudem: Mild tremors were felt at several places in Bhadradri-Kothagudem district on Tuesday night. Tremors lasted four seconds in Kothagudem, Paloncha, Burgampadu, Bhadrachalam, Sujatha Nagar, Laxmidevipally and Manuguru. The tremors triggered panic among the people. People in vicinity of mining areas thought that vibrations were due to blasting. But soon they realised that they were tremors.