Wonder Girls left for the United States Saturday to step up efforts to produce their first local album there.
A spokesman of JYP Entertainment, the management agent of the pop group said:
"The group will concentrate on preparation for their first local album, a little delayed, upon arrival in the U.S."
"The group was earlier scheduled to release their first U.S. album in February or this month but is obliged to delay the album due to a member change and new face. They plan to step up efforts to prepare making the album for a release in April or at latest in May."
