The Justice Ministry will review a controversial Immigration Bureau Web site where people can anonymously report suspicious foreigners who might be illegal aliens.

But although groups supporting foreign nationals living in Japan have criticized the ministry and called for the online service to be scrapped, the ministry is expected to only conduct a partial review, sources said Thursday.

Visitors to the site, launched Feb. 16, can enter the name, address or workplace of any suspicious foreigners. The report is then automatically sent to regional immigration bureaus, which have jurisdiction over workplaces where foreigners are employed.