North Korea confirmed Tuesday that it had successfully tested a new "precision-guided" ballistic missile a day earlier, reiterating that it was working to send an even bigger "gift package to the Yankees" — a veiled reference to a long-range missile capable of striking the continental U.S.

The new missile launched Monday was equipped with a more advanced automated pre-launch sequence than previous versions of its "Hwasong" missiles, the North's state-run Korean Central News Agency (KCNA) said in a report, using the name Pyongyang has used for some of its Scud-class missiles.

The missile flew some 400 km, apparently landing in Japan's exclusive economic zone — a move that prompted Prime Minister Shinzo Abe to vow "concrete measures" in response.