@stormyknight: I just read that story. It said that when the crime occurred, the girl was said to be 22 years of age and that was the reason she was treated as an adult. On August 15, 2004, she was hanged in a public square in Neka, an Iranian city.
A journalist who was covering the case got word that the girl was only 16 years old. He talked with the family who provided the girl’s birth certificate, confirming the fact that she was just 16. It’s a very sad story.
Along with drug smuggling and murder, sex outside of the sanctions of marriage is considered a capital crime. Since the death of that young girl, Iran has sworn not to execute anyone else under the age of 18.