Question

can an unlawful killing of a human being without malice aforethought still lead to an arrest for a homicide crime?
yes, for manslaughter
only if it was accidental
no, its not a crime
only if it was premeditated

Explanation:

Homicide includes unlawful killings without malice aforethought, specifically manslaughter. Manslaughter is a homicide crime that involves unlawful killing without the premeditated malice that defines murder. Accidental killing may be involuntary manslaughter (still a crime), premeditation applies to murder, and unlawful killing without malice is still a criminal homicide.

Answer:

Yes, for manslaughter