North Korea has fired a missile over northern Japan in a move Japanese Prime Minister Shinzo Abe called an “unprecedented” threat to his country.
The missile, launched early on Tuesday Korean time, flew over Hokkaido island before crashing into the sea.
The UN Security Council is expected to hold an emergency meeting in response.
North Korea has conducted a flurry of missile tests in recent months but firing projectiles over Japan is rare and sharply escalates tensions.
On the two previous occasions North Korea fired rockets over Japan – in 1998 and 2009 – the North claimed they were for satellite launches, not weapons.