Ropar/Chandigarh, July 25 Cabinet Minister Charanjit Singh Channi today alleged that a group of persons tried to attack Punjab Pradesh Congress Committee (PPCC) president Navjot Singh Sidhu during his visit to Gurdwara Katalgarh Sahib in Chamkaur Sahib on Saturday. Chamkaur sahib event Channi claims no effort has been made to identify the troublemakers so far Serious Issue If mischievous persons, in the guise of farmers, harm some important person, it can have serious repercussions. - Kuljit Nagra, MLA Channi claimed the incident occurred despite the police being informed in advance about the alleged presence of unscrupulous elements. Sidhu, PPCC working president Kuljit Nagra and Channi were reportedly returning in a vehicle after paying obeisance at the gurdwara when the incident occurred.