TEHRAN, Iran (CNN) -- Iranian security officials defused a bomb on a domestic flight en route to Tehran, the country's semi-official news agency said Sunday.
A crew member found the bomb in the plane's toilet Saturday night after the Kish Air flight took off from the western city of Ahvaz, the Fars news agency said.
The plane, with 131 people on board, was diverted back to Ahvaz where security officials defused the bomb, Fars said.
Ahvaz is in the oil-rich Khuzestan province, which has a sizable Arab population.
The Arabs have long complained that while the region provides a great deal of oil, it sees little of the money. They want greater representation in the central government and the regime to pay more attention to their needs.
The Iranian government has traditionally blamed foreign interference for unrest in the region.
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