Tehran, Jan 03 (Agencies): Iran on Monday hanged seven people convicted of drug trafficking in the western city of Kermanshah and a man found guilty of murder, media reports said.

Fars news agency quoted Kermanshah prosecutor Mojtaba Maleki as saying that the seven drug traffickers were hanged "simultaneously" after their request for pardon was rejected.

"The hanging sentences were carried out simultaneously on Monday at the central prison following the order of the revolutionary court and the head of the judiciary," he said.

The men, who were not identified, were convicted of producing and distributing drugs, such as heroin and crack, Fars reported.

The State television reported on its website another hanging in the restive southeastern province of Sistan-Baluchestan.

Bahman Rigi was executed in the central prison of the provincial capital Zahedan after he was found guilty of murder, "moharebe" (waging war against God) and drug trafficking, the report said.

The latest hangings bring to 12 the number of executions reported in Iran so far this year, according to media reports. At least 179 people were executed in 2010.

Along with China, Saudi Arabia and the United States, Iran has one of the highest numbers of executions each year.

The Islamic republic says the death penalty is essential to maintain law and order and is applied only after exhaustive judicial proceedings.

Murder, rape, armed robbery, drug trafficking and adultery are other crimes punishable by death in Iran.