Tensions mount on the Korean Peninsula.
The reclusive state has already announced plans to launch a rocket, setting off alarm bells in the region.
Now Pyongyang said it will put two american journalists on trial, Laura Ling and Euna Lee from the U.S.-based media outlet Current TV. They have been accused of what North Korea called "hostile acts".
State Department spokesman Gordon Duguid.
SOUNDBITE: State Department spokesman Gordon Duguid, saying (English):
"We have seen press reports that there will be charges but we have not had that through our diplomatic contacts. We will continue to work this diplomatically and try to see if we can help our citizens."
Pyongyang's trial announcement comes just days before North Korea plans to put what it says is a satellite into space. Washington and others - however say it will be a test of a long-range missile that could carry a warhead as far as U.S. territory.
The United States, Japan and South Korea are deploying missile-interceptor ships in the area.
Deborah Lutterbeck, Reuters