We believe Voldemort intended to create the sixth and final Horcrux by killing Harry Potter. It is possible that he was carrying the artifact he meant to convert into a Horcrux with him, and it would have remained when he died. It could have been found in [[Muggles' Guide to Harry Potter/Places/Godric's Hollow|Godric's Hollow]] when Harry goes to investigate there. Harry, however, never entered his parents' house, only looking at it from outside the overgrown hedge.
Thwarted by Harry, Voldemort apparently used [[Muggles' Guide to Harry Potter/Characters/Bertha Jorkins|Bertha Jorkins']] death to create a final Horcrux, which Dumbledore believes lies within [[Muggles' Guide to Harry Potter/Characters/Nagini|Nagini]]. There is a risk, of course, in that a living being, with a mind of its own, will interact to some extent with the associated soul fragment, but Voldemort would have been low on resources at this point, and only had a small selection of artifacts to choose from. In passing, we do see one of Dumbledore's very rare mistakes here; Dumbledore says that Voldemort used Nagini to kill Frank Bryce, and may have created a Horcrux at that time. This would imply that it is not necessary to kill someone directly in order to create a Horcrux; ordering another to do the killing would be sufficient, perhaps with the proviso that the being ordered to do the killing must not be sentient. However, reading the end of chapter 1 of [[Muggles' Guide to Harry Potter/Books/Goblet of Fire/Chapter 1|''Harry Potter and the Goblet of Fire'']], we see that in fact Voldemort killed Frank Bryce with the [[Muggles' Guide to Harry Potter/Magic/Avada Kedavra|Killing curse]]. Thus, even if Bryce's death had resulted in creation of a Horcrux, we wouldn't know if directly murdering someone is necessary to the Horcrux creation spell. The author's saying that the Diary Horcrux was made by way of Moaning Myrtle's death, which was caused by the Basilisk, rather than directly by Riddle, does rather confirm that using an agent to commit the murder does not prevent a Horcrux being created.
