The National Police Agency is hoping to revise the antiques business law to counter the increasing number of stolen antiques that are being traded on Internet auction sites, agency officials said Thursday.

The proposed revision would require operators of auction sites to report to the authorities when opening a site and also when a stolen antique is found to be on sale, the officials said.

The agency is planning to present a bill in the current Diet session, they said. If enacted, it would be the first ever government-imposed restriction on auction sites.