Thiruvananthapuram: Biju Radhakrishnan has been sentenced to three years rigorous imprisonment and fined Rs 10,000 for solar fraud. A case has been registered against Biju Radhakrishnan’s Swiss solar company for embezzling Rs 75 lakh from a Thiruvananthapuram resident. Biju Radhakrishnan had confessed guilty in the case. He faces no more than five years in prison in various cases. The trial of the other accused Shalu Menon and Kaladevi will continue.