Update at 10:00 and 17:45: this article has been updated to include further details from South Korea’s military and comment from a U.S. official.

North Korea on Saturday morning launched what is believed to be two short-range ballistic missiles into the East Sea, South Korea’s Joint Chiefs of Staff (JCS) said.

The missiles were reportedly launched from the country’s North Pyongan Province, which borders China, into the Sea of Japan, known in Korea as the East Sea.

They were fired at 06:45 and 06:50, the JCS said in a follow-up statement, and flew 410 kilometers at an altitude of 50