Homicide (the killing of another person), that is not criminal, but caused completely by accident or in self defence.
Accident: An undesirable or unfortunate happening that occurs unintentionally and usually results in injury, damage, or loss. An act that results in injury that is in no way the fault of the perpetrator or victim, for which compensation or indemnity might be legally sought in civil court but not as a criminal action.
“Accidents” can be Criminal cases if the accident was foreseeable, which may represent criminal negligence, which can make the “accident” an indictable offense.
“Accidents” can be Criminal cases if it is the result of Wilful blindness, which involves deliberately closing your mind to the possible consequences of your actions.
Self Defence: A justification for an alleged criminal act whereby an accused had the necessary mens rea and was supposedly defending himself or herself, property, or others.