List 4 circumstances which would elevate murder to aggravated murder?

In the United States the punishments and the law regarding murder varies by jurisdiction. Nevertheless, the concept of it does not vary so much, it is usually defined as a killing that was deliberated and premeditated. Moreover, it is also referred to as capital murder and is the most serious degree of all homicide crimes. On the other hand, there are some aggravating factors for murder including:

* The usage of explosives,

* Killing an official of the justice system like a prosecutor or police officer,  

* More than one murder victim,  

* The victim was under the age of 14 years old.

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