BREAKING: @jimsciutto is reporting the U.S. is monitoring intelligence that North Korean leader Kim Jong Un is in “grave danger” following a surgery.

DEVELOPING: Kim Jong UN last appeared in public on April 11th. He reportedly underwent a cardiovascular procedure earlier this month.

BREAKING: @NBCNews is reporting North Korean leader Kim Jong Un is brain dead after slipping into a coma following complications from a cardiovascular surgery.

DEVELOPING: @NBCNews correspondent Katy Tur deletes the Tweet reporting North Korea's leader is "brain dead," saying she did so out of an "abundance of caution."

DEVELOPING: South Korean officials say they have not picked up signals of anything abnormal with Kim Jong Un's health.