As a result, a number of Japanese miners fathered children with native Congolese women. However, most of the mixed race infants resulting from these unions died, soon after birth. Multiple testimonies of local people suggest that the infants were poisoned by a Japanese lead physician and nurse working at the local mining hospitale. Subsequently, the circumstances would have brought the miners shame as most of them already had families back in their native Japan. The practice forced many native Katangan mothers to hide their children by not reporting to the hospital to give birth.
Other women raised their child more rural or remote areas as blasian children were sought after and murdered in the city by Japanese officials. Today, fifty Afro-Japanese have formed an association of Katanga Infanticide survivors. The organization has hired legal council seeking a formal investigation into the killings. The group submitted official inquiry to both the Congolese and Japanese governments, to no avail. Issues specific to this group include having no documentation of their births, since not having been born in the local hospital spared their lives. The total number of survivors is unknown.