A South Korean official of the United Nations watchdog, the International Atomic Energy Agency (IAEA), died in a traffic accident in Iran, according to Iranian media.

The Islamic Republic News Agency (IRNA) of Iran reported that two IAEA experts were driving in a car that overturned in Markazi province on Tuesday, in the vicinity of the Khandab complex, southwest of Tehran, killing one of them, injuring the other.

Khandab is the site of a heavy water reactor that is being constructed.

IRNA cited Iran’s Atomic Energy Organization as its source for the information.

The dead man was identified as Ok-Seok Seo. The Iranian Student’s News Agency (ISNA) said the other man was of Slovakian origin.

However, according to Reuters, the other man was identified as South Korean also, citing the Fars news agency.

The IAEA has posted no comment yet on the reported death.

Iran is scheduled to hold a new round of talks with IAEA officials in Vienna next week. More negotiations will be held in Baghdad, Iraq later in the month.

The IAEA regularly sends inspectors to Iran to monitor its nuclear sites, although in the past they have complained they do not get full access to areas where the agency believes Iran is developing nuclear weapons.