Although authorities have cited other reasons like anti-Islamic activities and anti-state activities for her arrest, charging and punishment, the real reason is that she converted to Christianity as this is not the first such case nor will not be the last in Iran
Two years imprisonment is the punishment!!
But Islam pronounces death penalty for apostates (those who leave Islam to other faiths) as Prophet Mohammad, founder of Islam, said,"Kill any one who leaves Islam...".
Incidentally, all major Islamic schools thought in Sunni Islam and Shia award death penalty to Muslim apostates. Now is it that all these schools misunderstood Koran and its peaceful message of 'No compulsion in Islam ......' and 'Your religion to you and my religion to me' so profoundly.
Iranian Christian convert sentenced to two years in prison
A Christian convert whom security authorities arrested in her home was sentenced to two years in prison by the Revolutionary Court in Tehran.
According to reports sent by reporters of Iranian Christian news agency, Mohabat News, Ms. Leila Mohammadi, a Christian convert who resided east of Tehran, was sentenced to two years of imprisonment after enduring 5 months of uncertainty in notorious Evin prison.
Her trial was held on 18 January in Revolutionary Court in Moalem street where she was charged with "collaboration with foreign-dependent groups, broad anti-Islamic propaganda, deceiving citizens by formation of what is called a house church, Insulting sacred figures and action against national security." However she was acquitted of collaboration with foreign-dependent groups because the judge believed she had done that unintentionally. For the other charges she was sentenced to two years in prison and the ruling was delivered to her.
After the verdict was issued knowledgeable sources reported that her attorney announced that the case was sent to the high court of Tehran province to be reviewed.
Leila Mohammadi, was arrested after a number of security agents raided her home on 30 July, 2011 at 10:30 P.M. in Kianshahr town, east of Tehran. The agents thoroughly searched her house and also confiscated some of her belongings.
Ms. Mohammadi was taken to Horr custody center which belongs to the Iranian police forces. From there, she was transferred to Evin prison. On 28 December 2011, she was released on a bail of 150,000 USD after 74 days in harsh conditions in solitary confinement in Evin prison.}}}
It is being reported that some other people were also arrested in relation to this case. According to this report, some days after Ms. Mohammadi's arrest, another person called Parviz G. was also arrested by security agents. Again, in this case they thoroughly searched Parviz G's house and seized his belongings including his computer. He was freed after spending three days in Evin custody center and being subjected to interrogations and signing a disclaimer. It seems that his arrest was related to evangelical activities of his wife "Masoumeh" who was linked to the case of Leila Mohammadi.