The robots seem to have crashed into the sea outside Japan's economic zone, reports Japanese NHK.
This is the second North Korean test launch in a week. The tests are being conducted after the country's dictator Kim Jong-Un recently declared that North Korea is building up its capability to strike enemies with nuclear weapons.
A few hours after the tests, the dictatorship resorted to another, tried method: So-called trash balloons were sent towards South Korea's airspace, according to officials in the neighboring country.
North Korea has sent thousands of such balloons since May. The balloons are often filled with fabric scraps, cigarette butts, fertilizer, and other trash and are seen as a form of psychological warfare with roots in the Cold War. They are also described as retaliation against activists in South Korea who have sent flyers criticizing the regime in Pyongyang against North.
The city administration in Seoul is urging residents to stay indoors and be aware of falling objects.
