South Korea calls investigation as forced labour feud with Japan deepens

South Korea called on Friday for an international investigation of what it said were accusations by Japanese officials that it had passed some high-tech materials imported from Japan on to North Korea in violation of U.N. sanctions.

The call is the latest twist in a dispute between the US allies that could disrupt supplies of chips and displays from South Korea’s tech giants Samsung Electronics and SK Hynix, which count Apple Inc and other smartphone makers as customers.