New Delhi: BJP on Tuesday launched a counter-attack on Arvind Kejriwal after he called Narendra Modi a 'coward' over CBI raid at his principal secretary's office, saying it has become a 'fashion' with the Delhi Chief Minister to 'quarrel' with the Centre and blame the Prime Minister for 'everything'.

"Why should we handle anybody? We are in a federal system and everybody has been assigned their responsibilities and they have to act in accordance with the Constitution.