The investigation centres on alleged financial irregularities involving the Mass Art Society, an organisation headed by Indranil Sen’s wife. Kolkata, Oct 28 (PTI) Kolkata Police on Wednesday arrested former West Bengal minister Indranil Sen over financial irregularities in holding Durga Puja preview shows and the sale of passes, with. Former West Bengal minister Indranil Sen arrested amid Durga Puja ticket scam allegations and ED probe into MassArt financial irregularities.