SEOUL, South Korea (AP) — South Korea's military said North Korea fired an unidentified missile Friday from its capital Pyongyang that flew over Japan before landing in the northern Pacific Ocean.

It was the second aggressive test-flight over the territory of the close U.S. ally in less than a month and it followed the sixth and most powerful nuclear test by North Korea to date on Sept. 3.

South Korea's Joint Chiefs of Staff said the missile traveled about 3,700 kilometers (2,300 miles) while reaching a maximum height of 770 kilometers (478 miles).

The missile was launched from Sunan, the site...