By KWANG-TAE KIM

SEOUL, South Korea — South Korea says North Korea has fired a sixth missile off its eastern coast.

The Joint Chiefs of Staff say five missiles were fired earlier Saturday and the sixth around 4:10 p.m. (0710 GMT).

The launches come two days after North Korea fired four short-range missiles.

The test-firing could further escalate tensions in the region as the U.S. tries to muster support for tough enforcement of a U.N. resolution imposed on the communist regime for its May nuclear test.

South Korea’s Yonhap news agency quotes military officials as saying the missiles fired Saturday appear to be Scuds. South Korea’s military said North Korea’s Scuds are considered short-range.