North Korea added insult to injury Friday when, hours after blasting South Korea's leader as "impudent" and vowing not to meet with Seoul officials, it launched two more "projectiles" into the Sea of Japan.

The launches — the sixth in just over three weeks — were confirmed by Japan and South Korea.

The South Korean military said the two unidentified "short-range projectiles" were fired at around 8:01 and 8:16 a.m. from the eastern coastal county of Tongchon in Kangwon Province. Both flew around 230 kilometers (143 miles) at a maximum altitude of 30 km (18 miles) and a top speed of around Mach 6.1, according to the South's Joint Chiefs of Staff.