A fire broke out in an oil refinery in Iran's South Pars gas field on Tuesday. (Xinhua/Reuters Photo)

TEHRAN, Aug. 30 (Xinhua) -- A fire broke out in an oil refinery in Iran's South Pars gas field Tuesday, according to the official IRNA news agency.

The fire erupted at the eighth refinery's sewage unit of phases 15 and 16 of the gas field, according to the report. No casualties have been reported so far, said IRNA.

Firefighters have been dispatched to the refinery to contain the fire, and rescue operators are also on site, the report said.

However, the refinery's operation has not been interrupted, it added.

Recently, similar incidents have been reported in other petrochemical plants in the country.

In July, a fire broke out at a petrochemical complex's storage tank in Iran's western province of Kermanshah. Investigations suggested that a faulty electrical system may have caused the accident.

Furthermore, in June, the Bou Ali Sina Petrochemical Plant in Iran's Mahshahr port city in the south west damaged key parts of the complex.

Local reports estimated the damage to that complex at around 66.3 million U.S. dollars.

Sabotage has not been ruled out as a possibility by some local officials.