Seoul, April 2 -- North Korea on Tuesday test-fired a suspected intermediate-range ballistic missile toward waters off its eastern coast, South Korea's military said, adding to a series of weapons demonstrations that have raised tensions in the region.South Korea's Joint Chiefs of Staff said the missile was launched from an area near the North Korean capital, Pyongyang, but it did not immediately confirm how far the weapon flew. The North had said last month that it tested a solid-fuel engine for its new-type intermediate-range hypersonic missile as it tries to expand its arsenal of weapons aimed at remote US targets in the Pacific, including the military hub of Guam.

It was the North's first known launch event since March 18, when North...