The unity among 18 anti-BJP parties, who gathered in New Delhi to protest the arrest of Delhi Chief Minister Arvind Kejriwal, showed signs of fracture a day later when veteran CPI(M) leader and Kerala Chief Minister Pinarayi Vijayan on Monday accused the Congress of demanding the ED probe into the Delhi liquor excise policy case. Addressing a press conference amidst his Lok Sabha poll campaign, seeking votes for LDF candidates, who are in direct fight against the Congress-led UDF in many constituencies, Vijayan alleged that it was the grand old party which levelled the allegations against the Delhi government, demanded the ED probe, and lodged a complaint regarding the matter. The Marxist veteran said the huge participation of people in the INDIA bloc rally held in New Delhi a day ago was a strong warning for the BJP. He, however, added that the Congress should also learn a lesson from the rally. Referring to the stand taken by the Congress in the Delhi liquor excise policy case, h