State officials did not immediately comment on Riahi's claim.
The fraud involved using forged documents to get credit at one of Iran's top financial institutions, Bank Saderat, to purchase assets including state-owned companies like major steel producer Khuzestan Steel Co.Authorities put Mahafarid Amir Khosravi, also known as Amir Mansour Aria, to death at Evin prison, just north of the capital, Tehran, the TV reported. The report said the execution came after Iran's Supreme Court upheld his death sentence.
Khosravi's lawyer, Gholam Ali Riahi, was quoted by news website khabaronline.ir as saying that the death sentence was carried out without him being given any notice. Death sentences in Iran are usually carried out by hanging.
"I had not been informed about the execution of my client," Riahi said. "All the assets of my client are at the disposal of the prosecutor's office."