New Delhi, Nov 8 (PTI): BJP members of the JPC on the 2G spectrum allocation issue today ended their boycott of the panel by attending its meeting in which they again raked up their demand for calling Prime Minister Manmohan Singh and Finance Minister P Chidambaram as witnesses.

As soon as today's proceedings began, BJP members led by Yashwant Sinha demanded that the PM and Chidambaram be called against the backdrop of the deposition by former Cabinet secretary K M Chandrasekhar.

Chandrasekhar had told the Joint Parliamentary Committee that he had written to the Prime Minister suggesting an increase in the license fee for 2G spectrum so that the government could earn an additional Rs 35,000 Crore.

BJP members claimed after the meeting that JPC chairman P C Chacko was open to the suggestion of holding a special meeting to discuss the list of witnesses.

It is learnt that some members like DMK's T Siva also demanded that former telecom minister A Raja be called as a witness.

There were some heated exchange of words when a Congress member demanded calling former Prime Minister Atal Bihari Vajpayee as a witness.

BJP members have been boycotting the JPC proceedings for nearly two months. Even before the boycott, they had stormed out of two JPC proceedings accusing its Chairman of behaving in an autocratic manner and charging Congress members with using foul language when they had pressed for summoning the Prime Minister and Finance Minister as witnesses.

They had stayed away from the subsequent two proceedings of the Committee.