The Central Bureau of Investigation (CBI) said on Thursday that disgraced Satyam founder B Ramalinga Raju, his brother and another arrested official are "not sharing everything" in connection with the Rs.78 billion ($1.5 billion) fraud in the IT major and want them to go through a lie-detector test.
The probe agency also said that if they are dissatisfied with the answers then they will make the Raju brothers undergo a narco analysis.
"We have applied for conducting a polygraph test on the trio in a Hyderabad court as we feel more evidence is required," CBI director Aswini Kumar said Thursday.
Besides Ramalinga Raju, the CBI also wants his brother B Rama Raju and former chief financial officer Vadlamani Srinivas to undergo the test.
"We feel the Rajus are not sharing everything with us. It is a case of corporate fraud not conducted by an outsider but by the person who is the founder of the organization itself," Kumar told reporters on the sidelines of a conference in the capital.
The investigative agency last month booked the accused for criminal conspiracy, criminal breach of trust, cheating, forgery and falsification of accounts.
Ramalinga Raju had January 7 confessed that he had cooked the company's account books and inflated profits over the past several years.
Asked if CBI will also apply for a narco test on Raju, Kumar said: "If everything comes alright in a polygraph test and we are satisfied that he is not hiding anything then we will not go for a narco analysis test. But if we feel that he is hiding anything then we will go for a narco test also."
"The fraud involves an amount that is much more than Rs 7,800 crores (Rs 78 billion). As per the investigations till now it is close to Rs 10,000 crore (Rs 100 billion)," Kumar added.
The company founder and his brother Rama Raju were arrested January 9 for the fraud. Former chief financial officer Vadlamani was picked up the next day. Two former auditors from PriceWaterhouse were detained later.