The Enforcement Directorate (ED) has filed a fresh chargesheet against Congress MP Karti Chidambaram and some others in a money laundering case linked to alleged issuance of visas to some Chinese nationals in 2011. Apart from Karti Chidambaram, the son of senior Congress leader and former Union minister P Chidambaram, the ED has named his close associate S Bhaskararaman and some others in the chargesheet. Karti Chidambaram, 52, is a Lok Sabha MP from Sivaganga seat in Tamil Nadu and the agency has recorded his statement in the case a number of times and other top stories.