Tehran: Iran has hanged five people, including a man convicted of a murder he committed when he was 15, a newspaper said on Wednesday, the latest in a series of executions that have drawn international criticism.

The Etemad daily said Reza Hejazi, 20, was hanged on Tuesday in a prison in the central city of Isfahan for stabbing his friend to death when he was 15.

"Reza was hanged inside the prison in Isfahan on Tuesday at dawn," said his lawyer Mohammad Mostafai.

Major human rights groups appealed to Iran in July to stop imposing the death penalty for crimes by juveniles and to commute sentences against nearly 140 youths known to be on death row. Iran has executed at least 30 juvenile criminals since 1990, including seven in 2007, according to the groups which say Saudi Arabia and Yemen are the only two other countries to do so.