North Korea fired a suspected ballistic missile Thursday toward waters off its east coast after issuing a warning to the U.S. of a ‘fierce’ move if it persists in conducting joint military drills with allies in the region.

North Korea fired a short-range ballistic missile at around 10:48 a.m. from Kangwon province, South Korea’s Joint Chiefs of Staff said. It was its first missile test in about a week and adds to the record of more than 60 ballistic missiles fired this year — in defiance of United Nations resolutions barring Pyongyang from such launches.

The test came shortly after Foreign Minister Choe Son Hui issued a statement saying Pyongyang will respond militarily if the U.S. keeps working with its allies on joint exercises, including those to deter North Korea.