NEW DELHI: BJP and its "friends" were informed about the demonetisation of high value currency "a week before" the move was effected, especially keeping the upcoming UP polls in mind, Delhi Chief Minister Arvind Kejriwal today alleged.Kejriwal questioned the logic behind the introduction of Rs 2000 notes saying it will fan corruption and the black money economy instead of containing it and that demonetisation has hit the common men hard.Interestingly, Kejriwal's Cabinet colleague Satyendar Jain supported the "historic" move to introduce Rs 2000 currency notes saying it will remove corruption and black money. "To remove corruption & Black money, decision to introduce Rs 2000 notes historic," Jain tweeted.The AAP chief, in a video message, said a racket of commissions was thriving across the country. The fault lies in their (government's) intentions, Kejriwal said.In a series of tweets, Kejriwal also took pot shots at an advertisement of Mobile payments firm 'Paytm' that featured Prime Minister Narendra Modi 's image, saying the company was the biggest beneficiary of the move."There is evidence that their (BJP) friends and own people were informed a week before the decision was announced. They have made all arrangements like buying property or gold. BJP is going to fight polls in Uttar Pradesh and other states. It has made arrangements."Common men are the only ones suffering. I spoke to many people, they told me that black money holders have done settings already. Money will be delivered to their homes in lieu of 15 to 20 per cent commission," Kejriwal said.Kejriwal said he was finding it difficult to understand as to why Rs 2000 notes have been introduced, which he said will only make hoarding of black money easier."Utterly shameful. Do people want their PM to model for pvt cos? Tomo, if these cos do wrongdoings, who will act against them? Paytm biggest beneficiary of PM's announcement. Next day PM appears in its ads. Whats the deal, Mr PM?" Kejriwal said in a series of tweets.