A Kerala court on Thursday ordered the registration of an FIR against Chief Minister Oommen Chandy and Power Minister Arayadan Mohammed in connection with the solar scam. Chief accused in the case, Saritha, had alleged that she paid bribes worth Rs 1.90 crore to a close aide of the chief minister and Rs 40 lakh to the power minister. Both ministers had denied the allegations.

Nair on Wednesday testified in front of a judicial commission investigating the scam. Leaked tapes of a conversation between Nair and Congress state general secretary Thampanoor Ravi revealed on Thursday that he coached Nair the night before her deposition. During their conversation, Ravi told Nair what to say regarding her meeting Chandy, and that she should follow what the government’s counsel said.

Chandy was questioned by the commission for 11 hours on Monday about his connection to the scam, which assumes particular political importance as Assembly elections are due in the state later this year. He said the scam is a conspiracy started by the liquor lobby after the state government decided to close down bars in Kerala. Members of the Democratic Youth Federation of India are protesting and demanding Chandy's resignation today in Thiruvananthapuram.

Nair and Radhakrishnan were both arrested in 2013 for cheating investors, from whom they collected crores of rupees, for a solar energy project. Chandy and other Congress ministers have been accused of taking money and sexual favours as part of the scam.