By HYUNG-JIN KIM
SEOUL, South Korea (AP) — North Korea has again fired artillery shells near its tense sea boundary with the South. Seoul said some 90 rounds of artillery were fired on Sunday. Meanwhile, the influential sister of North Korean leader Kim Jong Un mocked the South’s ability to detect its weapons launches. She said that on Saturday her country’s military only detonated blasting powder simulating the sound of coastal artillery. South Korea has said that some 60 rounds were fired on Saturday. South Korea’s Joint Chiefs of Staff dismissed Kim Yo Jong’s statement as “a comedy-like, vulgar propaganda” meant to undermine the South Korean people’s trust in the military and stoke divisions.