Party's Punjab unit chief Pratap Singh Bajwa said the government conceded police failure by removing state police chief Sumedh Singh Saini who, he claimed, was Sukhbir's personal choice.
"The Chief Minister and his deputy must resign taking moral responsibility. Sukhbir must also relinquish the post of SAD president as the issues involved are multi-layered," he said.
Bajwa in a statement said the "turmoil" in the state was a result of the failure of intelligence and investigating agencies to locate the missing holy book.
Senior Congress leader Amarinder Singh said Saini's removal from the post of DGP was "long overdue and he should have been replaced long back".
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He said while his (Saini's) removal was a welcome step, "the people of Punjab will not be satisfied till those behind the Kotkapura firing incident are not dismissed and charged with murder".
Amarinder in a separate statement hoped that the new DGP, Suresh Arora, will not "shield the guilty cops and restore public confidence in police functioning".