Youcef Nadarkhani was arrested and was tried and found guilty of apostasy by a lower Iranian court in Gilan, a province in Rasht. He was then given verbal notification of an impending death-by-hanging sentence.
The court gave Nadarkhani the opportunity to recant, as the law requires a man to be given three chances to recant his beliefs and return to Islam.
The final verdict....the Christian pastor is to be put to death for leaving Islam and converting to Christianity, he may now be executed at any time without prior warning, as death sentences in Iran may be carried out immediately or dragged out for years.
Islam has a death penalty for apostasy. Muhammad, the prophet of Islam, said, "Whoever changed his Islamic religion, then kill him"
(Bukhari 9.84.57). And all the schools of Islamic law still teach that death is the proper penalty for apostates.
http://www.jihadwatch.org/2012/02/iran-misunderstands-islam-sentences-christian-pastor-who-converted-from-islam-to-death-for-apostasy.html