Siamak Namazi
CNN  — 

Siamak Namazi, an Iranian-American detained in Iran, marked 2,000 days – more than five years – in Tehran’s notorious Evin Prison on Saturday and his family again urged the Biden administration to do everything it can to get him and his father home.

Namazi was arrested and detained in October 2015 and a year later was convicted of “collusion with an enemy state” – the United States – and sentenced to 10 years in prison. He is now the longest-held Iranian-American imprisoned in Iran, according to a statement from his US-based legal team.

His elderly father, Baquer Namazi, was arrested and detained in February 2016 after being lured to Iran under the false premise that he would be able to see his son. Babak Namazi, Siamak’s brother and Baquer’s son, revealed in February that his father’s sentence had been commuted, but he has still been barred from leaving Iran.

On Saturday, Babak Namazi again urged the US government “to continue to do all it can to secure their releases and to refuse to make any concessions to Iran that do not include my family’s freedom.”

“What is clear to me is that what has been tried by the two previous US Administrations for the past 2,000 days has not yielded success, and I hope and expect President Biden will take immediate, fresh, and bold approaches to get my family out of prison. At the same time, I implore the Iranian authorities to act with humanitarianism and dignity by granting them their freedom,” he said.