Fourth round of Iran-US talks to be held in Europe - reports

The color of the smoke from the first explosion at Rajaei port in Bandar Abbas suggests the presence of a large amount of sodium, defense and security analyst Farzin Nadimi told Iran International.

"The color of the smoke from the first explosion is completely yellow, which indicates the presence of a large amount of sodium in the blast," Nadimi said.

"Sodium is the main material used to produce sodium perchlorate — the same chemical that was unloaded at Bandar Abbas in February and March this year. This chemical, imported from China, is combined with ammonium chloride to produce ammonium perchlorate, which is used in the production of solid missile fuel," he added.

Internet speeds in Bandar Abbas dropped significantly on Saturday evening following the explosion at Rajaei port, according to reports received by Iran International.

Several users said in their messages that internet speeds in Bandar Abbas severely declined as reports about the explosion at Rajaei port emerged, making it difficult to upload or download videos.

The office of Iran’s prosecutor general earlier warned it would take action against social media users publishing "false information" about the explosion.

Several countries including the United Arab Emirates, Oman, Saudi Arabia, Iraq, Japan, and Russia have expressed condolences after the explosions at Rajaei port in Bandar Abbas.

Saudi Arabia said it was ready to provide any assistance requested by Iran, while Russia’s embassy in Tehran said any request for help would be immediately relayed to Moscow.

Iraq’s foreign ministry also offered support, and Prime Minister Mohammed Shia al-Sudani ordered officials to coordinate aid with Iran.

The issue of transferring highly enriched uranium out of Iran "has not been raised at all" in the Iran-US talks, and Washington has not made any demands regarding zero enrichment, the Revolutionary Guard-affiliated Tasnim News reported.

"Uranium enrichment is not among the points of contention in the negotiations," the report said, citing an informed source.