Sept. 14 (UPI) — North Korea fired an “unidentified” missile from its capital city of Pyongyang, South Korean military officials said Friday.

Reports of the fired missile prompted Japan to warn residents to take shelter, BBC News reported.

“North Korea fired an unidentified missile eastward from the vicinity of Pyongyang this morning,” the South Korea Joint Chiefs of Staff said.

South Korean officials said it and the United States were evaluating the incident.

This is a developing story.