2 adults shot; 2 children died from smoke; man in custody

Two neighbors died from gunshots while two children found dead in one of the victim's home died from smoke inhalation from a fire set in the house, a coroner said Wednesday.Relatives said the two neighbors, a man and a woman, didn't really know each other.Officers first found David Cousin Jr. shot to death in a vacant lot and then found the bodies of the three others in a nearby house where they smelled smoke inside, police said.