Despite media reports on Monday that Mr Kim's son Kim Han Sol was in Kuala Lumpur, Dr Noor Hisham said yesterday: "At the moment, no one has come forward as the next of kin".
Earlier, the Malaysian response to the ambassador's press conference had been equally blunt, with Foreign Minister Anifah Aman saying North Korea's complaints were based on "delusions, lies and half-truths".
Kang Chol, North Korea's ambassador to Malaysia, had issued a statement claiming Pyongyang could "not trust" the police investigation into Kim's death and demanding Malaysia return the body to North Korea immediately.
Kim Jong Nam was estranged from his younger brother and had been living overseas for years.
In addition to the North Korean man, two women who are alleged to have carried out the attack - a 28-year-old with Vietnamese travel documents and a 25-year-old with Indonesian documents - have been arrested. He is believed to have had at least three children with two women.
Malaysia is one of the few countries that maintains ties with reclusive North Korea, and the dispute could further isolate the impoverished state.
Kim Jong Nam, who was in his mid-40s, died Monday after seeking medical assistance at a customer service counter at Kuala Lumpur airport.
The Indonesian woman has told investigators that she was duped into thinking she was part of a comedy show prank.
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Guardiola has also suggested the quality of English football would be improved if FA Cup replays were scrapped. 'This type of media speculation doesn't help clearly evaluate all that Luis Enrique has achieved, ' he added.
"At the moment we can not trust the investigation by the Malaysian police", ambassador Kang Chol told reporters after talks at the foreign ministry.
South Korean and U.S. officials have said the killing was probably carried out by North Korean agents.
Malaysia has said that it has yet to formally confirm the identity of the slain North Korean on Valentine's Day in Kuala Lumpur.
KUALA LUMPUR, Malaysia No cause of death has been determined yet for the exiled member of North Korea's ruling family who died last week after apparently being poisoned in a Kuala Lumpur airport, officials said Tuesday.
Kim Jong-Nam was once thought to be the natural successor to his father, the then-North Korean leader Kim Jong-Il.
After the assassination of Kim Jong-nam by the "LOL girl" and her partner, Ed Morrissey asked whether or not such a blatant and provocative move might finally wake up China.
Traditionally, the Chinese have paid little more than lip service to sanctions and other disciplinary measures taken by the global community against the reclusive dictatorship in North Korea.
Malaysian Health Minister Subramaniam Sathasivam said Monday that it will announce the autopsy results on Wednesday.