The former chief minister had alleged a nexus between Upadhyay and certain power distribution companies, saying firms owned by him were installing and repairing meters for the discoms in the national capital.
On Wednesday, Upadhyay had said, "If Kejriwal fails to prove, I will file a criminal defamation case against him. If Kejriwal's allegations are found to be true, I will quit politics."
Taking a jibe at Upadhyay, Kejriwal on Thursday wondered whether the Delhi BJP chief would keep his words of quitting politics.
"Satish Upadhyay said he wud quit politucs if we present evidence. Today we will present evidence. Hope he keeps his word," Kejriwal tweeted.
He had also asked how BJP had made Upadhyay its Delhi chief when he has alleged links with power discom BSES.
He also alleged that Upadhyay owns six companies one of which had two VAT numbers which is against law.