Bandyopadhyay was taken to Bhubaneswar soon after he was arrested by the CBI after questioning at its office here.
"This is to show solidarity with Sudip (da). Partha Chatterjee and Subrata Bakshi will be travelling to Bhubaneswar this Sunday to meet him there," a top party source said.
Asked whether the duo will meet another party leader Tapas Paul, also in CBI custody in Bhubaneswar, the source said, "That is yet to be decided. But any decision whether to meet Paul will be taken there."
"Reports in the media on the questions asked by the CBI to Sudip (da) are wrong. He was not asked a single question. We have confirmed this," the source said.