People who suffered a premature or violent death, were unfulfilled in love or simply had an improper burial were destined to become one of the most feared vampires in Assyria and Babylon.
This ancient spirit was the result of the soul of the recently deceased being trapped in limbo unable to find peace.
It would therefore wander the earth and attack those unfortunate enough to cross its path.
Also called 'Lilith'.
This vampire, found in Jewish/Babylonian myth, drank the blood of babies and young children.
This vampire spirit is another instance of a 'trapped soul', in that the 'Utukku' was thought to be the spirit of someone who had recently died but had returned from the grave unable to find rest.
There are, however, some instances in which this 'vampire' is described as a demon so I unfortunately I cannot be more precise on this one.