The Afrit is in Arabian lore, the vampiric spirit of a murdered man who seeks to avenge his death. The afrit rises up like smoke from the Blood of the victim. Like the European vampire, the afrit can be stopped by driving a nail into the bloodstained ground.
From: The Encyclopedia of Vampires, Werewolves, and Other Monsters – Written by Rosemary Ellen Guiley – Copyright © 2005 by Visionary Living, Inc.