"It is a sinister attempt to disturb the peace and harmony of Punjab by anti-national forces," said BJP state vice-presidents Harjit Singh Grewal and Iqbal Singh Lalpura and state secretaries Vineet Joshi and Vijay Puri here at a press conference.
The government should not only remove the hoardings, but also take action against those who designed them, printed them, put them up and allowed to them to be put up on their buildings, they added.
The outfit's "anti-India" campaign in the US, Canada or the hoardings erected by them across Punjab seemed to be a part of the Pakistan's ISI's plan to trigger an unrest in India, they added.
The BJP leaders alleged that while Chief Minister Amarinder Singh was being vocal against the Khalistani elements and organisations such as the Sikhs for Justice, his government had "turned a blind eye" towards the hoardings.