In sociology, explain why the chief medical examiner can sometimes get involved with other avenues of investigations even if there was no apparent sign of homicide for situations such as abortions and sudden death when in good health?

In the sociology of crime we deal with sociological causes of committing the crime and the inevitable social consequences of the act, however, in this answer, we are looking at the perspective of the chief medical examiner who tends to get involved with the investigations of a criminal act despite he/she being a passive investigator of the case. Still, in most situations due to specific physiological and sociological reasons, the role of the chief medical examiner becomes eminent despite it not being a case of homicide in society.