The anticipated return to Azerbaijan of an opposition leader has sparked troubled in the capital Baku.
Dozens of Rasul Guliyev’s supporters were arrested after police prevented them from getting to the airport.
Guliyev, who faces corruption charges in Azerbaijan, had said he intended to return to take part in next month’s parliamentary election.
He has lived in exile in the US since 1996 after falling foul of President Heidar Aliyev, father of current leader Ilham. Guliyev, the head of the Democratic Party, was himself detained during a stopover in Simferopol in Ukraine.
Local police said he was held at the request of Azeri authorities and that he was now being questioned by an Interpol officer in Crimea.
The former parliamentary speaker has been charged with embezzling the equivalent of around 83 million euros in state funds. He denies the charges and says they are politically motivated.