An Iranian-British woman who took part in a demonstration in Tehran against a ban on women attending men's sporting events was jailed for a year for spreading anti-state propaganda, Iranian media said.
Ghoncheh Ghavami was arrested on June 20 outside the city's Azadi Stadium, where she, along with a group, demanded that women be allowed in to watch a volleyball match between Iran and Italy.
She was charged by a Tehran court with activities and propaganda against the Islamic Republic.
Britain, which has no permanent diplomatic presence in Iran, said it had several worries about the way Ms. Ghavami had been treated and now reportedly sentenced to a jail term.
"We are concerned about reports that Ghoncheh Ghavami has been sentenced to 12 months in prison for 'propaganda against the state'," a spokesman from the Foreign Office in London said in a statement.
"We have concerns about the grounds for this prosecution, due process during the trial, and Ms. Ghavami's treatment whilst in custody."
Iran does not recognise dual citizenship and treats dual nationals as Iranians.
Ms. Ghavami was released soon after her arrest in June but was re-arrested days later when she was called back to reclaim personal belongings that authorities had confiscated. In October, she went on a two-week hunger strike.
Iranian women in the Islamic Republic are banned from watching certain male sports events such as football and volleyball.
