Calcutta, March 10: The CBI has brought under its scanner the flow of over Rs 20 crore, including Rs 6.47 crore from the sale of paintings, that the Trinamul Congress has received between 2010-11 and 2013-14.

The CBI, which has accessed Trinamul's annual audited reports, wants clarifications from the party on income heads such as donations, sale of paintings and the proceeds linked to Jago Bangla, the party's mouthpiece. (See chart).

Among the various heads, the proceeds from the sale of paintings stand out.

In 2011-12, the party raked in as much as Rs 3,93,90,000 (Rs 3.94 crore) from the sale of paintings, according to the audited report Trinamul has submitted to the Election Commission. A year later, the party received Rs 2,53,00,000 (Rs 2.53 crore) under the same head.

Neither the name of the artist nor the titles of the works have been listed by Trinamul in its audited reports. In a party teeming with men and women from the world of art, chief minister Mamata Banerjee is known to paint religiously.

In October last year, the CBI had questioned artist Suvaprasanna on some painting exhibitions, including some where Mamata's paintings were displayed.

Another figure that has caught the eye of the CBI is Rs 9,50,10,900 (Rs 9.5 crore) under the head "donation" in 2013-14 - the same year that the controversial Trinetra Consultant gave the party at least Rs 1.4 crore as a "loan".

Crores of rupees have been shown against the sale of the party's mouthpiece, Jago Bangla. The party has taken care to mention that the figures included sales through hawkers - something that will be very difficult to establish, unlike the case of subscription sales where buyers can be traced.

The CBI, which is probing the Saradha scam, wants similar details and clarifications on the party's income for 2014-15 as well, which is yet to be submitted to the Election Commission.

The agency had told Trinamul to furnish the information by today but till this afternoon, the party had not done so.

"We receive thousands of letters daily at our headquarters. Going through each and responding, where necessary, takes time. If such an agency has indeed sent us a letter, the party will respond to it in good time," Trinamul secretary-general Partha Chatterjee said.

A CBI officer said the agency wanted to know if the Saradha depositors' funds had been used to buy the paintings.

"A second letter, addressed to Trinamul's new all-India general secretary, Subrata Bakshi, will be sent shortly. The content of the letter will remain the same," the officer said.

On March 5, the CBI had sent the first letter to Mukul Roy, who had already been dropped from the post of Trinamul all-India general secretary.

A CBI officer said tonight that Roy had sent an email yesterday, informing the agency that he no longer held any post in the party.

"Since Roy has informed us that he is no longer the party's general secretary, we are going to give the party more time to respond," the officer said.

However, if needed, Roy can be called to the CBI office again for clarifications on the audited reports.

The BJP, which had first brought the Trinetra issue to light two months ago, today demanded a separate CBI probe into the "scam".

BJP state chief Rahul Sinha said one of Trinetra's directors, Manoj Sharma, was untraceable.

"His mother, who works as a domestic hand, says she doesn't know where he is. The CBI should get to the bottom of this. Is he even alive, or is he being kept in hiding for two months? He is the main witness in the Trinetra scam and he must be traced," Sinha said.

Sinha has said Mamata herself should respond to the CBI poser as Roy can no longer respond and Bakshi is new to the post.

"To establish the truth, she is the only person who can and should respond," he added.

Additional reporting by Amit Ukil