Chandigarh, Apr 14 (UNI) To ensure free, fair and peaceful upcoming Lok Sabha Elections, Punjab Police on Sunday carried out a special operation ‘OPS Seal-VI’ aimed at checking all the vehicles entering or exiting the border state of Punjab to keep vigil around the movement of drug smugglers and bootleggers. The operation was conducted in a synchronised manner from 0800 to 1400hrs on the directions of Director General of Police (DGP) Punjab Gaurav Yadav.