The trial of Swede Johan Floderus, a European Union diplomat who has been detained in Iran for more than 600 days, has begun in Tehran, Swedish Foreign Minister Tobias Billstrom said on Tuesday.

Flatterus, 33, was arrested on April 17, 2022, at Tehran's airport as he prepared to go home after traveling with a friendly company.

Since then, the Swede, who works for the European Union's diplomatic service, has been imprisoned in Tehran.

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Sweden's foreign minister said Flatterus' detention was arbitrary.

There is no reason for Johann Flodderus to continue to be detained, there is no reason to bring him to justice, Billstrom said.

In September, Iranian judicial authorities said Flatterus had "committed crimes" in Iran and that an investigation had been conducted. An EU official told AFP in September that Iran had never given the reason for Flatterus' detention.

In Iran, it has long been the practice to arrest foreign nationals who would then be "traded" in exchange for the release of Iranians detained abroad.

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