Two workers were killed in an explosion that took place at a military explosives factory southeast of Tehran, near the suspected nuclear reactor in Parchin, IRNA, the official Iranian news agency, reported Monday.

The agency quoted Iran's Defense Industries Organization, which said a fire occurred Sunday night, killing two people. The agency did not provide additional information.

The semi-official ISNA news agency also reported that an explosion occurred at a military base near Tehran, killing two people.

"Unfortunately, two workers were killed," the defense organization's spokesman was quoted as saying.

The Saham opposition website reported that a huge explosion occurred at the large facility in Parchin, located 30 km. southeast of Tehran.