The five pathologists opted to collect more body samples for further forensic analysis in a government laboratory.
Government pathologist Dr Dorothy Njeru said the murder was done in a "professional" manner such that they were no physical injuries to indicate the cause of the death.
Most of Musyoka's internal organs were found intact.
Five pathologists have failed to ascertain the cause of death in the case of an electoral agency officer whose body was found in Kajiado County on Monday.
The team conducted an autopsy on slain Independent Electoral and Boundaries Commission (IEBC) returning officer Daniel Mbolu Musyoka yesterday at Loitokitok Sub-County Hospital.
