Doctors who performed Joseph Nkaissery's postmortem. [PHOTO/the-star.co.ke]

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A postmortem has revealed that the late Interior CS Joseph Ole Nkaissery died of a heart attack.

The Monday postmortem indicated that the general suffered a condition medically known as myocardial infarction.

This is a kind of heart attack where there is an irreversible death of heart muscles secondary to prolonged lack of oxygen being supplied.

The spontaneous coronary artery dissection kind of heart attack can also be accessioned by a burst of heart arteries.

The examination was conducted by government pathologist Johansen Odour, two specialists proposed by the family and lawyer Maiyan Sankare.

The autopsy was done at the Lee Funeral Home Nakaissery still lies in state.

Earlier, doctors at the Karen Hospital had ruled out heart attack as a possible cause of the death.

According to the Star, a senior officer at the hospital said only other causes could have resulted to the death.

"Karen Hospital has ruled out any possibilities of heart attack as the cause of CS Nkaissery's death," says an earlier article published by The Star.

"A senior manager at the hospital told the Star on Saturday that doctors who received the late have every reason to believe it was not a heart attack," the paper adds.