Punjab DGP Siddharth Chattopadhyaya on Saturday said the initial investigation into the Ludhiana district court blast case has revealed that the former state police head constable who was killed in the explosion had gone to the washroom to assemble the bomb and plant it somewhere.

Addressing the media here, the director general of police said Gagandeep Singh, who was dismissed from service in 2019, was alone in the washroom when the bomb went off and had links with some Khalistani elements and narcotic smugglers.