SEOUL - North Korea has tested short-range missiles in the Sea of Japan (known as the East Sea in Korea), in an apparent attempt to counter-act joint U.S.-South Korean military exercises, South Korean news agency Yonhap reported.

"North Korea test-launched a short-range missile in the East Sea [Sea of Japan] this afternoon, amid the ongoing security crisis on the Korean peninsula following Pyongyang's third nuclear test last month," Yonhap news said.