Kim Yo Jong, sister of North Korean leader Kim Jong Un, has launched a scathing attack on South Korea, saying it is time to break ties with the "enemy".
According to the state news agency, KCNA, Kim Yo Jong has left the decision to take the next step of retaliation against South Korea to North Korea's military.
"I feel it is high time to surely break with the South Korean authorities. We will soon take the next action," she announced, without detailing what it would be or when it would be carried out.
Soon after, an emergency security meeting was convened in South Korea to review the situation and their response.
Three people die in Mexico World Cup celebrations as fans crowd streets
US and Iran enter technical talks to secure peace deal, shipping restart
After Venezuela quakes, citizens lead rescues amid military theft accusations
Two dead after wildfire guts house in northern Greece
Afghanistan launches airstrikes on IS targets on border with Pakistan
Bangladesh warns of dengue surge as weather aids spread
Fourteen children killed in Pakistan after tutoring centre roof collapses
Supreme Court rejects Trump bid to restrict birthright citizenship
