According to South Korea, a North Korean projectile burst shortly after launch.

According to the South Korean military, a North Korean projectile detonated shortly after launch on Wednesday, a failure in what would have been the regime of Kim Jong Un's tenth such launch this year.

According to a South Korean military officer, the explosion occurred at a height of 20 kilometers (12.5 miles).
The projectile was launched from the Sunan area near Pyongyang, according to South Korea.
The US Defense Department reported last week that North Korea's previous two launches, on February 26 and March 4, both from the Sunan area, were meant to test a new intercontinental ballistic missile (ICBM) system.

South Korean and US intelligence officials are still examining the details of Wednesday's failed launch, according to a text sent to reporters by South Korean officials.
Last week, Pentagon press secretary John Kirby issued a statement strongly condemning North Korea's recent missile launches, calling them a "brazen violation of multiple United Nations Security Council resolutions."
The US military held drills on and near the Korean Peninsula on Tuesday to demonstrate its readiness in the wake of North Korean action, including mocking up ballistic missile defense systems.

According to a news release from US Forces Korea, the 35th Air Defense Artillery Brigade went to a remote location, "occupying its wartime defensive posture, emplacing the Patriot missile system, and executing air and missile defense operations under a simulated conflict scenario."

According to a statement from the US Navy's 7th Fleet in Japan, F-35 and F/A-18 fighter jets flying off the aircraft carrier USS Abraham Lincoln, as well as US Air Force forces operating in the vicinity, went on a show of force in the Yellow Sea off the western coast of South Korea.

The US has also intensified intelligence, surveillance, and reconnaissance activities in the Yellow Sea, according to the statement.
"We have expressed our growing worry about North Korea's (North Korean) missile testing, and we will continue to take all necessary steps to guarantee the security of the United States and our partners," said 7th Fleet spokesperson Lt. Nicholas Lingo in a statement.