Rigi was hanged in Tehran’s Evin prison in the presence of families of the victims of the deadly attack on Irans Revolutionary Guards.
"The head of the armed counter-revolutionary group in the east of the country... was responsible for armed robbery, assassination attempts, armed attacks on the army and police and on ordinary people, and murder," a statement by Irans official news agency IRNA said.
According to the Iranian state news agency, Rigi is linked to the death of over 150 security force members and innocent people.
He was captured on 23 February, while on a flight from Dubai to Kyrgyzstan.
His hanging comes less than a month after his brother Abdolhamid was executed on charges of terrorism.
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