Iran’s authorities condemned US-Iran dual national Kamran Hekmati (pictured) to four years in prison over a trip he made to Israel in 2012 to celebrate his son’s bar mitzvah.

A 70-year-old jeweler from New York, Hekmati was born in Iran but immigrated to the United States when he was 13 years old. He traveled to Iran in May for a visit and has been held in Tehran’s Evin Prison since July.

Hekmati’s family revealed the sentence, imposed by an Islamic Revolutionary Court in late August. The following month, Iran’s judiciary reduced the punishment for traveling to Israel to two years in prison and thus cut his sentence in half.

A lawyer for the family has filed an appeal, but a court date has not yet been set. Relatives called for his release on humanitarian grounds, saying the jeweler is in poor health fighting aggressive bladder cancer.

Iran is currently holding at least four American citizens: Hekmati, journalist Reza Valizadeh, and two women whose identities have not been made public.

Tehran Detains 4 US-Iran Dual Nationals

Hekmati had visited Iran on multiple occasions and with his wife and four children. He did not encounter any problems until May, amid rising tensions before Israel’s 12-day war on Iran in June.

Security forces stopped Hekmati at Tehran’s Imam Khomeini International Airport as he tried to leave the country, confiscated his passport, and demanded access to his mobile phone and social media accounts.

He interrogated by intelligence agents several times at a relative’s home in Tehran. In early July, security agents raided the home and arrested him.