Weeks after the estranged half-brother of North Korean supreme leader Kim Jong Un died suddenly after having a substance wiped on his face by two young women in an airport in Malaysia, North Korean officials are offering an alternate theory to the one presented by Malaysian law enforcement: it must have been a “heart attack.”

Video of the young woman approaching Kim Jong Nam from behind and apparently smearing a substance on his face before running away to wash her hands has been making the rounds on news sites for weeks, and although North Korea demanded that no medical examination be conducted to aid in the investigation of the Jong Nam’s death, Malaysian authorities thought it best to do so anyway – and their efforts proved worth it, finding a banned chemical substance and highly toxic nerve agent known as VX smeared in the man’s mouth and eyes.

Malaysia has charged the two women with murder and has been seeking interviews with at least seven North Korean men.  Two of the suspects are said to be holding up inside the North Korean embassy, with four others already fleeing back to their reclusive nation.  North Korea has offered no assistance to Malaysian authorities, opting instead to hinder the investigation every step of the way – including their latest declaration that Kim Jong Nam must have died of a heart attack… despite not having any access to the body thus far in order to establish such a theory.  Stranger still, the North Korean delegation refuses to acknowledge the identity of the man, despite citing Kim Jong Nam’s medical records as evidence to support their stance.

“He has a record of … heart disease,” Ri Tong Il, a spokesman for the North Korean delegation, told reporters outside the North Korean Embassy. “Therefore, this is a strong indication that the cause of the death is a heart attack.”