Moscow: Three crewmembers of the International Space Station (ISS) returned safely to earth Saturday, the Interfax agency reported.

South Korean scientist Yi So Yeon, US astronaut Peggy Whitson and Russian cosmonaut Yuri Malentchenko landed in Kazakhstan at 0951 GMT in a Soyuz capsule, the mission control centre in Moscow said.

The capsule had undocked from the ISS at 0806 GMT for the return journey.