Even as Income Tax (IT) raids continued at Radaan Media centre, in Chennai, in connection with bribing of voters in RKnagar by poll, three more ministers might be summoned in this connection, it is learnt. Actress Radhika and her actor-husband, Sarath Kumar, were questioned till 11 p.m. last night. Their Radaan Media Centre has not paid Rs. 4.5 crore Income Tax, it is discovered. Also, the IT officials found Rs. 4 lakhs cash in the house of a Personal Assistant of minister Vijaya Bhasker.