TEHRAN - Iranian wrestler Navid Afkari has been executed after being convicted of stabbing to death a security guard, according to state media.

Afkari was executed "this morning after legal procedures were carried out at the insistence of the parents and the family of the victim", Kazem Mousavi, head of the justice department in southern Fars province, was quoted as saying.

Authorities accused Afkari, 27, of stabbing the water supply company employee in the southern city of Shiraz. Iran broadcast the wrestler's televised confession last week.

But Afkari said he was tortured into making a false confession, according to his family and activists. His lawyer said there was no proof of his guilt. Iran's judiciary, however, denied the torture claims.

Afkari and his brothers were employed as construction workers in Shiraz, 680km (420 miles) south of the capital, Tehran.

The provincial court in Shiraz also sentenced Afkari's brothers Vahid Afkari and Habib Afkari to 54 and 27 years in prison, respectively, over the killing.

Afkari's attorney accused authorities of denying his client a family visit before the execution, as required by law.

"Were you in so much hurry to execute the sentence that you also deprived Navid of a last meeting?" Hassan Younesi said on Twitter.

There was no immediate reaction by Iranian officials to the attorney's accusation.

US Secretary of State Mike Pompeo on Saturday condemned the execution.(FA)