Pyongyang has fired a ballistic missile off its east coast into the Sea of Japan, South Korean news agency Yonhap reports. The launch comes after the US slapped it with new sanctions in attempt to punish Pyongyang for its ballistic missile and nuclear tests.

The rocket flew some 800 kilometers before plunging into the sea, according to Yonhap. The type of the rocket was not immediately known, but the agency citing the Joint Chiefs of Staff alleged it to have been a medium range Rodong missile.

US officials confirmed that a missile launched from North Korean territory had been detected and tracked, according to Reuters.

The latest in a series of controversial military test comes shortly after Washington introduced new sanctions against the North, blocking businesses from any dealings with Pyongyang, including transportation, mining, energy or financial services.

The “robust” new sanctions, imposed on the heels of a UN resolution condemning Pyongyang’s recent nuclear test, also block US individuals and entities from the exportation or reexportation of any goods, services or technology to North Korea, as well as new investments.