DUBAI - Iran will defeat an enemy "conspiracy" against its foreign currency and gold markets, an adviser to Iran's supreme leader Ayatollah Ali Khamenei said on Friday, following violent protests that forced the closure of Tehran's grand bazaar.

Riot police fought demonstrators and arrested money changers in and around the bazaar on Wednesday during demonstrations triggered by the collapse of the rial, which has lost around a third of its value against the dollar over the last week.

Protesters called Iranian President Mahmoud Ahmadinejad a traitor because of what many say is his serious mismanagement of the economy, which has also been badly hit by Western sanctions imposed over its nuclear program.

But there has so far been no public criticism of Iran's most powerful authority, Ayatollah Ali Khamenei.

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