Union minister Babul Supriyo, one of five MPs the BJP has fielded for the Bengal assembly elections, today filed his nomination for the Tollygunge seat in Kolkata -- a high voltage event at which he played drums and drove himself and his wife and daughter to the nomination centre. Trinamool supporters gathered at the centre heckled him and shouted go back slogans. Even Chief Minister Mamata Banerjee mocked him at her rally at Barjora in Bankura district today, saying, "Is he running away from Asansol?"