North Korea has moved two short-range missile launchers to its east coast, apparently indicating it is pushing ahead with preparations for a test launch, a South Korean news agency reported on Sunday.

South Korea and its allies have been expecting some sort of North Korean missile launch during weeks of heightened hostility on the Korean peninsula.

An unidentified South Korean military source told the South's Yonhap news agency that satellite imagery showed that North Korean forces had moved two mobile missile launchers for short-range Scud missiles to South Hamgyeong province.