"Either Amit Shah should immediately step down from his post or he should be relieved from the charge as the party president, so that allegations of irregularities levelled against his son Jay Shah's company could be probed independently," AICC spokesperson Pawan Khera said in a press conference here.
He further suggested that a commission comprising two sitting judges of the apex court be set up for an independent and credible probe into the matter.
"It is the right of the country's people to know the truth behind what was claimed in the media report regarding his (Jay's) company," Khera said.
He also questioned why a union minister (referring to Railway Minister Piyush Goyal) came out to defend Jay Shah, who is neither a minister in the union cabinet nor a BJP officer-bearer.
Meanwhile, a senior Chhattisgarh minister refuted the charges and dubbed it as "entirely false" and "politically motivated".