Japan is seeking to add three more North Korean firms to a U.S. list of eleven North Korean companies that will be subject to an asset freeze.

The Yomiuri Shimbun said Thursday that Japan has requested the three firms be added to the list, which the U.S. will present to the United Nations Sanctions Committee soon in line with a U.N. Security Council statement denouncing the North’s April fifth rocket launch.

The three firms are Korea Tonghae Shipping Co., Pyongyang Informatics Center and Ponghwa Hospital.

According to Yomiuri, most of the firms on the U.S. list are trading companies and financial institutes that are allegedly involved in importing goods related to the development of ballistic missiles or the financing of such imports.

The daily said the Japanese government targeted 15 North Korean companies for financial sanctions, including the three it hopes is added to the current list, after North Korea test-fired seven ballistic missiles in July 2006.