Iranian Pastor Youcef Nardarkhani has again been released from jail and is now at home with his family, according to the American Center for Law and Justice.

Iranian authorities re-arrested the 35-year-old Christian pastor on Christmas Day, saying he had not served his full sentence.

"We are disappointed to hear Pastor Nadarkhani has been returned to prison in such an irregular manner," Mervyn Thomas, chief executive of Christian Solidarity Worldwide, said when he was arrested.

Nardarkhani had spent almost three years behind bars under a death sentence for refusing to renounce his Christian faith. He was acquitted in September.

Nardarkhani's attorney, Mohammed Ali Dadkhah, is serving a 10-year prison sentence for helping the Christian pastor and other religious and political prisoners.

Meanwhile, the ACLJ has launched a petition on behalf of American pastor Saeed Abedini, who is also imprisoned in Iran.

Abedini was arrested in September for his work in the nation's underground Christian community. The 32-year-old Iranian American is being held in solitary confinement and could possibly face the death penalty.

Sign the petition to free American Pastor Saeed in Iran.