A US aircraft carrier will arrive in South Korea on Sunday for manoeuvres, a media report says.
The atomic-powered USS John C Stennis will visit the port of Pusan and take part in the Key Resolve military exercises involving US and South Korean forces, the Yonhap News Agency reports.
Three US guided-missile destroyers and a cruiser will also participate in the visit to the port on the south-east coast of South Korea, 450km from Seoul.
The Key Resolve exercises are held annually.
Tensions have risen on the Korean Peninsula since North Korea carried out its fourth atomic test in January and a long-range rocket launch in February.