What is the case in which ED raided ex-Kerala CM Vijayan's house?

The ED raided CPI(M) leader and ex-Kerala CM Pinarayi Vijayan's rented house in connection with a money laundering case involving his daughter T Veena. A private mining company, Cochin Minerals and Rutile Ltd (CMRL), allegedly made illicit payments totalling ₹1.72 crore to Exalogic Solutions, a Bengaluru-based IT firm owned by Veena. But Exalogic didn't render any actual services to CMRL.