In these cases, you are most often dealing with a local (works/lives , or drives through) the area of the abduction on a regular basis
the attack isnt usually planned, in most cases, they see the victim alone and physically assault the victim, in others they see the victim alone and see how far they can get into a conversation with them before asking them to go with the suspect.
In some cases, the killer knew in advance they were going to kill the victim, but in the majority of these cases, they dont, at least not at the outset , its a result of panic, or anger usually post or inter sexual assault, as the motives in these crimes, are almost always sexual.
The victim is usually abducted within a half mile of their home, the offender will usually transport them somewhere they know they wont be discovered, the distance is usually greater than 3 miles away, but it may be much further.
Though the time in transit it to be considered, the one factor that remains consistent in these types of crimes, is that most child victims who are abducted for sexual purposes, are killed within 30-90 minutes post abduction.
Counter to that most missing kids haven't even been discovered to be missing until about 2-4 hours after they have been abducted, so in other words, the victim is usually deceased, before their famlies even know they are missing .
Because its not a planned event, most are strangled manually or with some article of clothing or something the killer had in his possession, cordage etc..
The body recovery sites in these types of crimes, are critical, they speak into the offenders comfort and are usually a result of familiarity, the location of the victims body , is often very close to or is the same place where the actual murder occurred .
Now in some cases that may be the susects vehicle, but where the victim is discovered, is usually within a 200 foot radius from where they were actually killed, even if they were killed in a vehicle, it was usually parked close to that spot .
Its very risky to keep captive or move a live victim, so very few actually abduct and hold a live victim for a period of time, those that do again fall into that serial killer realm again.
However those that do keep the victim alive usually only do until they get them to an area where they can murder the victim, and that again is usually some place they are familiar with.
Though rare, there are cases, where the victim is killed in whatever type of structure they are being held captive in, the offenders home, apartment, sometimes its makeshift like a shed or sometimes its in a remote place they break into etc..., however the killer will use some method to conceal the deceased victim so he (almost always male) can get them into a vehicle to transport them somewhere. But these types are exceedingly rare .
One thing that is very common with these offender types , they very often return to the victims body, and often multiple times , this underscores the importance of questioning people who may have seen anybody in that area prior to the discovery of the victim, it may be simply someone who drove by the area multiple times, or someone physically near the area where the victim was found .
The offnder is usually between 27-36 at the time of the offense, he will often have a criminal history, often involving sexually natured crimes, though usually short of abduction and sexual assault, but not always , sometimes they have a extensive history of sexual offenses
He will usually be described as "odd" by those who know him, he has few friends usually lves with his parent(s) or family member.
Unlike killers of adults, theres not usually a triggering event prior, they arent mad taking it out on anyone, they are sexually frustrated when a victim happens to cross their path. Also unlike serial killers, though many of them do become serial killers, these types arent out actively looking for a victim, the sole factor in a child becoming a victim in these cases, is the lack of an adult presence, the presence of other children does little to dissuade a committed offender, and often results in multiple victims
Post offense this killer would most likely have a burning interest in the case, he my suddenly alter his appearence, alter his vehicle, sell or change its appearence, he may dispose of the clothing he had on that day , in some cases, they may suddenly and without warning leave "I got a job somewhere" etc.. they will sometimes, inject themselves ito the investigation out of paranoia, and to keep tabs on its progress.
They may keep trophies from the victims, and in quite a few cases, these have been discovered by others they are around, but its explained away or dismissed, and usually not without remaining suspicion.
He may have even confided in someone, sometimes, its a friend, family member, some type of religious clergy etc...
As with these types of cases, they often re-offend , though it may be short of murder, the sexual aspect of these crimes usually remains , the victim type may change however some move onto adults , some do not
