North Korea's Kim Jong Un may be in "Grave Danger" after surgery: Report

New Delhi : A set of new speculations are coming after North Korean leader Kim Jong Un underwent a medical procedure and his absence at the last week's event has fuelled up the claims.

The US was monitoring intelligence reports that Kim may be in "grave danger after a surgery," CNN reported, citing a U.S. official with direct knowledge of the matter.

The Daily NK, a Seoul-based website that gathers information from informants inside the isolated nation, separately reported that Kim underwent a "cardiovascular surgical procedure" and was now mostly recovered. It was impossible to immediately verify the report, which the Daily NK said was based on one person inside North Korea.

Meanwhile, the health of the North Korean leader could not be determined as he is kept under a heavy security and a handful of insiders are allowed to meet him.

Kim didn't attend April 15 celebrations for the birthday of his grandfather and state founder Kim Il Sung, one of the biggest days on the North Korean calender.

The Unification Ministry said Friday it was "inappropriate" to speculate about the reasons for Kim's absence. Kim has made 17 public appearances this year that were mentioned in state media -- at a pace of a little more than one a week -- the ministry said.