The Dal Khalsa urged Akal Takhat head Gurbachan Singh to seek Sukhbir's explanation for his party's "unprincipled stand" on reservation for Jat Sikhs in the OBC category.
The organisation advocated that the reservation should be based upon economic criteria rather than caste, party head H S Dhami said in a statement here.
Both the SAD and opposition Congress had sought inclusion of Jat Sikhs in the category of OBC after the Centre included Jats from Haryana in the OBC list.