The truck, which overturned in Iran's southern Fars province, was carrying at total of about 125 people, the news agency said, citing the province's emergency services department. Some 83 people were injured, it added.
A senior transport police official said the cause of the accident was being investigated.
Many Afghans cross into Iran, the world's fourth largest oil producer, in search of work or safety. There are about 1.8 million Afghans in Iran. Iran deported about 100,000 between January and May.
(Reporting by Hashem Kalantari, writing by Edmund Blair)
