Delhi Chief Minister Arvind Kejriwal today doubled down on the dare to arrest his deputy, Manish Sisodia, in the alleged liquor policy scam. "What's the scam? The CBI has found nothing in raids on Manish. Why don't they arrest him if there's a scam? Just because the BJP says there's corruption, does not mean there is," the AAP chief said, speaking at the NDTV Townhall in Delhi.