About 400 families of Koreans injured during the Hiroshima and Nagasaki atomic bombings of World War Two will reportedly file a class action suit seeking compensation from the Japanese government.

The victims died in Korea without receiving a health care allowance from Tokyo because their residences were outside of Japan.

A Japanese media outlet reported Friday that the families of the victims plan to file a suit with courts in Osaka and Hiroshima as early as this month. It is the first time for families of Korean victims of the bombings to file a class action suit.

Japan's Health and Welfare Ministry announced in 1974 that it could not pay health care allowances to Koreans injured in the bombings if they returned to Korea after the war.

However, the Japanese Supreme Court ruled the announcement illegal in 2007, after which about 18-hundred victims of the bombs in South Korea and the U.S. filed a suit and settled on Japan's payment of over eleven-thousand U.S. dollars per plaintiff in compensation.