"He should be sacked. He should not be given an escape route by allowing him to resign," BJP deputy leader in the Rajya Sabha SS Ahluwalia told reporters.
He was asked to comment on media reports that Thomas has been asked to resign.
"Leader of the opposition in Lok Sabha Sushma Swaraj had given her dissent note but the prime minister and the home minister insisted on appointing him...he is named in the chargesheet as an accused in a 10-year-old case in Kerala," he said.
He claimed that while government had claimed that Thomas was not an accused, a RTI reply revealed that his name is still in the chargesheet.
The Supreme Court had last week raised questions about Thomas' controversial appointment as CVC despite his name figuring as an accused in a criminal case. His name figures in the chargesheet filed in a palmoleine export case.